Freelance Solidwork designer jobs

Because our team operates across different platforms, you must be comfortable delivering native files in both SolidWorks (.sldprt / .sldasm) and/ or PTC Creo (.prt / .asm).
Key Responsibilities:
• Design a custom mechanical enclosure around provided internal PCB footprints.
• Create parametric 3D models with appropriate wall thickness, draft angles, and snap-fits or fastening features.
• Deliver fully constrained, clean native models in both SolidWorks and Creo, along with universal STEP files.
Required Skills:
• Proficiency in SolidWorks and PTC Creo parametric modeling.
• Understanding of manufacturing processes (Injection Molding, 3D Printing, or Sheet Metal fabrication).
• Strong attention to detail regarding tolerances and clearance fits.

I'm looking for a technically capable and proactive AI engineer who can help transform an early-stage EdTech concept into a functional, interactive prototype.

The objective is to build an initial working version that demonstrates the solution's core functionality. It is not intended to be a fully launched or production-ready platform. The prototype may have zero users or direct beneficiaries at this stage.

Timeline & Deadline:
The final working prototype must be completed by November 4, 2026.

This is a firm deadline, so I need someone who is available to begin immediately and can realistically commit to the required timeline.

I would like to establish milestones and review progress throughout development rather than wait until the final delivery.

Communication & Collaboration:
-I would like to arrange an initial online meeting with the selected developer to:
-Discuss the project concept and technical requirements in more detail.
-Explain the intended functionality and expected user experience.
-Discuss the proposed technology stack and implementation approach.
-Agree on milestones, priorities, and deliverables.

Following the initial invitation and discussion, I intend to establish a formal contract through Upwork before development begins.

The contract will outline:
-The agreed project scope and technical requirements.
-Deliverables and acceptance criteria.
-The November 4, 2026 completion deadline.
-Development milestones and payment terms.
-Communication and progress-review expectations.
-Confidentiality and protection of project information.
-Ownership and transfer of project-specific source code and intellectual property.

I'd also like to arrange an initial meeting before finalizing the contract to discuss the project in more detail, assess technical feasibility, and ensure we have a shared understanding of expectations.

Development will begin once both parties have agreed to the terms and the Upwork contract is active.
I would also like to schedule follow-up meetings during development to review the prototype, test implemented features, discuss improvements, and ensure everything is progressing according to the agreed requirements.

Expected Deliverables
By November 4, I expect:
-An initial functional and interactive prototype.
-The agreed core features implemented and demonstrable.
-A working user journey rather than static screens.
-AI integrations where appropriate.
-Source code and basic technical documentation.
A final walkthrough demonstrating the completed prototype.

Work Style:
I value clear communication, reliability, initiative, and transparency. I'm looking for someone who can work collaboratively, suggest practical technical solutions, and communicate potential limitations early.

I will lead the product vision and provide the requirements and feedback. The developer will be responsible for the technical implementation and development.

This is a prototype-stage project, not a request for a fully launched commercial product. Sample data, predefined logic, and simulated functionality may be used where appropriate, provided the core experience is functional.

When Applying

Please include:
-Examples of relevant AI-powered applications or prototypes you've developed.
-Your availability to start immediately.
-Whether you can commit to the November 4 deadline.
-Your proposed technical approach and development milestones.
-Your estimated project cost.

I'm particularly interested in developers who are comfortable discussing the product, receiving feedback, and refining the prototype collaboratively.

I'm seeking an experienced industrial designer or mechanical engineer to help with:

Developing a functional snap-on attachment system that accommodates different frame widths and depths without damaging the existing frame.

Creating detailed 3D CAD files for the decorative shell and attachment components.

Producing a physical, functional 3D-printed prototype.

Optimizing the design for cost-effective injection molding and mass production.

Preparing manufacturing-ready technical files and specifications.

Please see example in attachment.

Looking for a skilled Mechanical Design Engineer to reverse-engineer an LA35 linear actuator from supplied STEP geometry.

Scope of Work:*
- Reconstruct housing, actuator shaft, mounting bracket, and end fittings.
- Develop an editable parametric SOLIDWORKS model.
- Verify critical dimensions and mechanical interfaces.
- Prepare native SOLIDWORKS and STEP files.

Requirements:* Strong SOLIDWORKS, reverse engineering, mechanical design, and manufacturing knowledge.

We're looking for an experienced SolidWorks Mechanical Designer for a long term project involving mechanical design, sheet metal components, and manufacturing drawings.
The work primarily involves modifying existing SolidWorks 3D models and producing accurate 2D engineering drawings based on project-specific requirements.
Most assignments will include existing CAD files, reference drawings, and clear instructions for the required modifications.

Responsibilities
- Modify existing SolidWorks parts, assemblies, and configurations.
- Create and revise detailed 2D mechanical and manufacturing drawings.
- Adjust dimensions, geometry, flanges, slopes, and other product features.
- Work with sheet metal components, fabricated assemblies, and mechanical equipment supports.
- Maintain drawing templates, annotations, title blocks, and revision standards.
- Prepare and update BOMs and related manufacturing documentation.
- Verify drawing accuracy and consistency with existing CAD models.

Requirements:
- Advanced, hands-on SolidWorks experience.
- Strong background in mechanical drafting and sheet metal fabrication.
- Experience working with existing production models and drawings.
- Ability to understand engineering requirements and identify inconsistencies.
- Experience with HVAC-related mechanical products is a plus.
- Strong attention to detail and ability to work independently.

Working Hours & Availability
- Long term, ongoing project
- Starting at 15 hours per week
- Expected to increase to approximately 30 hours per week as the workload grows
- Must be available during CST (US Central Time) working hours
- You must be able to work during CST hours, not merely have a few overlapping hours.
- If you can't consistently work on CST, please do not apply.

Communication Expectations
- Clear, reliable communication is essential for this role.
- You must be responsive during CST working hours, provide timely progress updates, and raise questions as soon as requirements are unclear.

We value engineers who take ownership of their work, meet agreed deadlines, and communicate proactively rather than waiting until problems affect delivery.

How to Apply
Please include:
- Your SolidWorks experience, particularly with production and manufacturing drawings.
- Your experience with sheet metal, fabrication, or HVAC-related mechanical components.
- One or two examples of actual SolidWorks engineering drawings you've completed.
- Confirmation that you can consistently work during CST business hours.
- Your availability to start.

Please apply only if you have strong SolidWorks drafting experience and can fully commit to the required CST schedule and communication expectations.

**Job Title: Optical/Fiber Optic Engineer Needed for Custom IR Sensor Cable Design, Testing & Manufacturing Sourcing**

MAC Faucets is seeking an experienced optical engineer or engineering team to design, prototype, test, and source manufacturing for a custom three-fiber cable assembly connected to an existing infrared sensor.

**Project Overview**

The assembly will use three separate fibers:
- One to transmit a 940 nm infrared emitter signal.
- One to return reflected infrared light to the sensor’s receiver.
- One to transmit a visible blinking LED indicator.

The sensor currently operates directly without fiber. We will handle any sensor modifications internally but need your recommendations for emitter/receiver selection and optical coupling.

**Key Requirements**

- Design sensor-side terminations with brass or stainless-steel sleeves.
- Design individual lens terminations for each fiber, with 3 mm and 5 mm lens options and approximately 40° light spread.
- Develop compatible extension cables in **1 m, 3 m, and 6 m lengths**.
- **Top priority: maintain consistent sensing performance across extension lengths without sensor recalibration.**
- Support object detection at approximately **75–300 mm**.
- Evaluate suitable fiber materials, connectors, protective jackets, lenses, and coatings.
- Assess feasibility against our optical, temperature, bend-radius, and manufacturing-cost targets.

Our preliminary preference is large-core multimode step-index fiber, approximately 600–1,000 μm core diameter, with high numerical aperture and low loss at 940 nm. Target operating temperature is −65°C to +125°C. Our target cable cost is below $6/m for all three fibers combined, including lenses and treatments but excluding stainless-steel jacketing. Please identify any requirements that need adjustment.

**Deliverables**

- Optical and mechanical specification datasheet.
- Optical loss budget and coupling/tolerance analysis.
- Prototype testing demonstrating performance across all three extension lengths.
- Manufacturing-ready 2D/3D drawings, preferably SolidWorks.
- Complete bill of materials and assembly instructions.
- Quality-control and acceptance-test procedures, including insertion-loss testing at 940 nm.
- Recommended component suppliers and cable manufacturers.

**Ideal Experience**

Fiber optic sensing, NIR optics, large-core multimode fibers, LED/photodiode coupling, lens design, precision terminations, prototype validation, and manufacturing sourcing.

**To Apply**

Please share relevant projects, your proposed approach, anticipated feasibility challenges, estimated timeline and cost, and whether you can support physical prototyping and testing.

A detailed technical scope will be provided to shortlisted applicants.

Seeking a mechanical product design engineer to evaluate the feasibility of a new consumer product, explore potential mechanisms, and create preliminary technical sketches for future prototyping and manufacturing. The project involves reviewing the product concept, identifying practical design solutions, and delivering clear documentation to support next-stage development.

Need a DFM engineer to help rebuild my prototype model and optimize it for injection molding. The product is a simple handheld consumer item with 3 to 4 parts, most of which are moving. I’m looking for someone who can improve the design for manufacturability, identify potential production issues, and recommend practical changes to make the final product reliable and easy to produce at scale.

We’re a hardware startup looking for an industrial designer with strong mechanical CAD skills. All project details are shared only after you sign our NDA.

The role

Exterior industrial design and production-intent CAD
Packaging the design around supplied internal components (STL/STEP provided)
Designing small mechanisms: adjustments, hinges, removable parts (magnetic or snap)
Milestone deliverables: concept directions, packaging model (STEP + native CAD), appearance model support, design-freeze package (CMF, tolerance-critical callouts)

Must have

Portfolio of compact consumer electronics taken to at least a working prototype
Production-grade mechanical CAD and surfacing (SolidWorks, Creo, Fusion 360 or Onshape; Rhino or Alias), with native files delivered
Packaging dense electronics in tight spaces: clearances, flex routing, tolerance stack-ups
DFM for injection-molded plastics and metal parts (machined, stamped or MIM)
Thermal management in small enclosures
Ergonomics and anthropometric fit
Designing to tight weight and size targets
Clear written English and regular milestone updates

Nice to have

Cover lenses and windows (tinted or coated plastics)
Small precision mechanisms and magnetic attachments
Rendering (KeyShot or similar)
Experience working with prototype shops or contract manufacturers

Engagement: fixed-price project, $1,000 total, paid across milestones that we set. Please include your earliest start date.

To apply, answer these (applications without answers won’t be considered):

Share 2–3 of your most relevant compact-electronics projects. What was your role, and did each reach prototype or production?
Which CAD tools do you use, and can you deliver native files plus STEP?
Describe a time you designed an enclosure around fixed internal components with a tight weight or size limit. What did you trade off?
How have you handled heat in a small enclosure?
Are you willing to sign an NDA before receiving the project brief?
How many hours per week can you commit, and when can you start?

We are seeking a skilled 3D designer to create high-quality 3D models for our product development projects. The ideal candidate will have experience in product design and be able to produce accurate, detailed models that meet our specifications. You will work closely with our team to refine designs and ensure they are ready for production. This is a part-time opportunity with potential for ongoing work for the right freelancer.

Project Overview:

We are looking for an experienced 3D CAD / Industrial Designer to create production-ready 3D models based on our product specifications.

Key Responsibilities:
- Create 3D CAD models from provided specifications and concept sketches/dimensions.
- Ensure the design complies strictly with Design for Manufacturability (DFM) rules for plastic injection molding (draft angles, wall thickness consistency, rib design, etc.).
- Deliver production-ready files in .STP / .STEP format for factory tooling and manufacturing.

Requirements:
- Proven experience in 3D CAD modeling specifically for plastic injection molding.
- Strong understanding of DFM standards and mold-making constraints.
- Proficiency in CAD software (SolidWorks, Fusion 360, PTC Creo, or similar).
- Clear communication and attention to detail.

Deliverables:
- Final 3D CAD files in .STP / .STEP format.
- Source CAD file (SolidWorks / Fusion 360).

I am seeking an experienced Industrial Designer to engineer and create clean 3D CAD models (STEP/IGES/OBJ formats) and high-resolution photorealistic marketing renderings for a patented-pending premium holiday consumer product ecosystem. The project includes three distinct, interconnected components:

1. Master Tree-Topper Hub (Angel/Fairy): An elegant, classic-looking tree topper designed with an internal hollow cavity in the base to house a circuit board, battery compartment, and wireless micro-transmitter. Must subtly integrate an invisible micro-speaker grill into the back design and a USB-C charging cutout.

2. Interactive Countdown Ornaments (Spheres): Exact 3.1-inch (80mm) diameter holiday spheres designed with a clean split, an elegant structural hinge, and a secure snap-latch mechanism so the ornament can click smoothly open and closed. The interior must be engineered into two zones: a tiny, sealed tech compartment at the back for a micro-wireless chip/LED/coin battery, and a spacious front capsule housing a removable velvet-lined insert tray designed to hold small toys or premium fine jewelry (charms, bracelets, rings).

3. Tabletop Tree-Shaped Display Case: A premium plastic case stylized in a classic 2-foot tall (24 inches H x 18 inches W x 4 inches D) Christmas tree silhouette. The front face must feature 24 recessed slots to perfectly cradle the ornament spheres and a master crown slot at the peak to dock the Angel. The design must accommodate an integrated data/power backplane layout behind the slots, flush metallic pogo-pin style charging terminals inside each cradle, and a clean "SYNC" button at the bottom frame base.

Deliverables Needed: - 2D conceptual design sketches for form factor exploration and approval. - Final production-ready 3D CAD files (STEP/IGES). - Exploded/Open 3D views showcasing the interior layout, latch, and hinge mechanics of the ornament. - 4-5 high-resolution photorealistic textures/renderings (including one "Toy Pack" vibrant plastic texture variant, one "Luxury Pack" frosted glass/metallic patterned finish that allows LED light to softly pulse through, and one fully docked view inside the display case).

Important: A strict Mutual Non-Disclosure Agreement (NDA) must be signed via chat before specific functional project details are unlocked. Please submit a link to your portfolio highlighting consumer packaging, electronic product design, or toys.

I need a freelancer to create accurate DXF files for a CNC machine so I can send them to a vendor for production. The work involves translating my design requirements into precise technical files that can be used reliably in manufacturing. Please share examples of similar work and your experience with creating files for CNC fabrication.

We need an experienced industrial designer to create detailed mechanical product designs for a new product. The work includes developing 3D models, refining product concepts, and preparing designs for manufacturing. You should be able to translate technical requirements into practical, manufacturable solutions and collaborate closely with the team to ensure the final design meets quality and production goals. Experience with mechanical product development and manufacturing readiness is important for this role.

We’re looking for a mechanical engineer to design a push sweeper system similar to the one attached.

You must have experience designing push sweepers or similar sweeping systems, with a strong understanding of how the brushes and debris collection work.

Please only apply if you have relevant design experience, and include examples of previous work.

We are looking for an experienced Industrial Designer / Mechanical CAD Engineer to model a 3D-printed, hand-assembled tabletop consumer electronics prototype enclosure (~220 mm footprint) integrating sealed acoustic chambers, active thermal venting for an embedded compute/amplifier stack, an internal PCB/microphone mount, a tilted top display mount, and a fabric-wrapped exterior shell.

To protect product confidentiality, the full specification brief, reference concept render, and complete off-the-shelf component STEP/mechanical drawing pack will be shared directly with shortlisted candidates upon NDA / kickoff.

Scope of Work:
- Model a multi-part parametric 3D-printed enclosure (designed for PETG/ASA with M2.5 and M4 heat-set brass inserts, 4–6 mm wall thicknesses).
- Package two isolated, sealed internal chambers (~1.4 L each) with sealed wire pass-throughs and verified excursion/clearance for transducers.
- Design a vented rear electronics bay with a bottom-access pull-out sled, passive/active airflow slots, internal ribbon-cable routing chase, and a tilted top display mount wedge.
- Design a top trim ring and bottom cap retention groove for a tensioned acoustic fabric wrap.

Acceptance Criteria (Definition of Done):
1. Parametric Native CAD (SolidWorks, Fusion 360, or Onshape) with clean rebuilds when key parameters (outer diameter, wall thicknesses, top mount tilt angle at 10° / 15° / 20°) are adjusted.
2. Complete Assembly STEP file plus print-ready STL/3MF files for every printed part, sized for PETG/ASA printing and heat-set inserts.
3. Verified airtight separation of the left/right acoustic chambers, sealed cable pass-throughs, and reported net internal volume per chamber.
4. Full mechanical interference and clearance check against all supplied off-the-shelf component STEP models and datasheets, plus center-of-gravity / tip stability check (and ballast recommendation if required).
5. One-page 2D critical-dimensions drawing (cutouts, heat-set insert callouts, mount geometry) and 3 studio product renders matching the provided industrial design reference.

Hello, I am looking for a designer to create a custom 3D-printable concrete mixer truck, approximately 20 cm long, for desktop display.

I will print it on my Bambu Lab P1S using filament. The model should have:
- A detailed, realistic appearance, without brand names or logos.
- Wheels that roll and a mixer drum that rotates freely by hand.
- Few parts and simple assembly, preferably snap-fit without screws.
- Parts separated for printing in different colors.

I need individual STL files for each part, STEP files, the editable CAD source file, and assembly instructions. Please include adjustments after my first test print.

This is a one-time project. Please provide your fixed price, delivery time, and examples of similar functional models you have designed. Ideally, I would like it completed in November, if feasible.

I can provide reference images.

I need a CAD designer with engineering experience and 3D printing knowledge to review my CAD and STL files for a 10ml injection gun that functions as a BD syringe exoskeleton. The design allows injections to be performed without using the thumb, and I have preliminary designs for 3, 5, and 10ml syringes. I’m looking for someone to review the 10ml file before prototype printing.

An electric moped maker needs a moulded rear hugger that keeps spray and grit off the rider and the frame, as a factory part and a retrofit kit. It has to clear the real rear end through the full suspension movement and be ready for a moulder to quote.

What you'll deliver:
- Native hugger model and an assembly with the swingarm driven through its movement
- STEP files of the part and the assembly
- A part drawing with mounting details and the kit parts list
- A short report of clearance and strength checks, and a one-page design note

What you need:
- SolidWorks or Fusion 360 surfacing for styled plastic parts
- Injection moulding design: draft, wall thickness and mounting features
- Assembly motion and clearance checking
- Fixing design with moulded-in parts and bolts

How the work runs:
- You work on a cloud computer we provide, with the software and project files ready. Nothing to install on your machine.
- Narration is a must: you talk through your work out loud in English as you go (what you are doing and why). We check this with a 30-second voice intro before hiring.

This is regular, ongoing work. We have similar projects coming continuously, paid per project, and we are looking for people who can commit 20+ hours a week. The full brief is shared once you are hired.

A home EV charger maker needs the last part of its product released: a moulded front cover that matches the industrial designer's shape and fits an existing base. The electronics height is not final, so the cover must be set to the final value and re-released quickly.

What you'll deliver:
- Native cover model driven by one key dimension, with an assembly
- STEP files of the cover at the agreed heights
- A part drawing for the moulder
- A short checks report and a one-page design note

What you need:
- SolidWorks surfacing for smooth, curvature-continuous styled parts
- Injection moulding design: draft, wall thickness, undercuts and snap fits
- Parametric models that rebuild cleanly when one value changes
- Working to a moulder's rules and a designer's intent

How the work runs:
- You work on a cloud computer we provide, with the software and project files ready. Nothing to install on your machine.
- Narration is a must: you talk through your work out loud in English as you go (what you are doing and why). We check this with a 30-second voice intro before hiring.

This is regular, ongoing work. We have similar projects coming continuously, paid per project, and we are looking for people who can commit 20+ hours a week. The full brief is shared once you are hired.

A drive manufacturer needs a liquid-cooled aluminium cold plate for a power inverter, designed to fit the existing cabinet and modules and released with machining programs. The shop must be able to run each batch without the programmer standing next to the machine.

What you'll deliver:
- Native part files and an assembly with modules, seal and fittings
- STEP files for each part and the assembly
- Posted machining programs, setup sheets and simulation evidence
- Drawings with tolerances, a short calculation report and a one-page design note

What you need:
- SolidWorks or Fusion 360 part modeling for machined aluminium
- CAM programming with simulation, fixtures and work offsets
- Cooling channel design and basic hydraulic checks
- Drawings with a functional datum scheme and tolerances

How the work runs:
- You work on a cloud computer we provide, with the software and project files ready. Nothing to install on your machine.
- Narration is a must: you talk through your work out loud in English as you go (what you are doing and why). We check this with a 30-second voice intro before hiring.

This is regular, ongoing work. We have similar projects coming continuously, paid per project, and we are looking for people who can commit 20+ hours a week. The full brief is shared once you are hired.

A plant-hire company needs a production design for a self-dumping hopper that tips and returns by itself on a forklift, so a small batch can be built in its own fabrication shop. The design must work for the different materials customers load and be released for the shop to build.

What you'll deliver:
- Native assembly of body, base, latch and release, with saved positions
- STEP file, flat-pattern and profile DXFs
- General arrangement and welded assembly drawings with a parts list
- A short report of the tipping and strength checks, and a one-page design note

What you need:
- SolidWorks sheet metal, weldments and assemblies with motion
- Tipping, balance and load-case checks with simple FEA
- Latch and linkage design that works by hand
- Fabrication drawings for welded and galvanised parts

How the work runs:
- You work on a cloud computer we provide, with the software and project files ready. Nothing to install on your machine.
- Narration is a must: you talk through your work out loud in English as you go (what you are doing and why). We check this with a 30-second voice intro before hiring.

This is regular, ongoing work. We have similar projects coming continuously, paid per project, and we are looking for people who can commit 20+ hours a week. The full brief is shared once you are hired.

A kitchen fit-out contractor with its own stainless shop needs one extract canopy design that can be set up for each new restaurant site from its equipment list and survey. You release it for the first three sites so the shop can cut, fold and weld them and the fitters can hang them.

What you'll deliver:
- One configurable native model, with an assembly per site
- STEP files and flat-pattern DXFs for every sheet-metal part
- Manufacturing and installation drawings
- Bills of materials per site and a one-page design note

What you need:
- SolidWorks sheet metal modeling with configurations or design tables
- Welded stainless fabrication and design for a shop's standard
- Assemblies that rebuild from a few inputs without remodelling
- Drawings and flat patterns a fabricator can build from without questions

How the work runs:
- You work on a cloud computer we provide, with the software and project files ready. Nothing to install on your machine.
- Narration is a must: you talk through your work out loud in English as you go (what you are doing and why). We check this with a 30-second voice intro before hiring.

This is regular, ongoing work. We have similar projects coming continuously, paid per project, and we are looking for people who can commit 20+ hours a week. The full brief is shared once you are hired.

We're Addition Robotics, building Plus, a bimanual mobile robot that works alongside care teams in senior living communities. We have a working, printed, and assembled robot head shell, and we're looking for an experienced mechanical designer to review it for manufacturability and apply improvements in Fusion 360.

We print in-house on Bambu Lab printers. You'll work in our Fusion 360 team hub with the full robot assembly, so you can see every mating part.


WHAT YOU'LL DO

Phase 1 – DFM review (fixed price, also serves as the paid trial)
We'll share the Fusion CAD, photos of the printed parts, and a list of known issues from our builds (print failures, support scars, assembly pain points, fit problems).

- Review each head shell part against our known issues and DFM best practice:
- print orientation and supports
- wall thickness and overhangs
- warping risk
- heat-set insert bosses
- layer direction vs. load
- part splits and seam placement
- fastener access and assembly order
- Deliver a per-part findings list. For each issue, give its severity (must-fix, should-fix, or nice-to-have), the proposed change, and an effort estimate.
- Keep proven interfaces to the neck, frame, and internal electronics unchanged unless a change is justified and approved.
- Set our existing clearances and heat-set insert geometry as Fusion user parameters.

Phase 2 – Apply fixes (fixed-price milestone, priced from Phase 1)

- Redesign the head shell parts to the approved findings.
- Preserve sensor and camera windows, cable routing to the neck, and service access to internal electronics.
- The head is the face residents see, so keep it visually clean. Place seams and fasteners where they are least visible and easy to wipe down.
- One to two fit-check rounds: we print and assemble, send photos and notes, and you revise.

Deliverables

- Clean, parametric native Fusion 360 files (named components, tidy timeline) in our hub.
- Print notes per part: orientation, material, and supports.
- A callout sheet for critical interface dimensions.


REQUIREMENTS FOR OUR ENVIRONMENT

The robot operates around elderly residents and is wiped down with facility disinfectants. Designs must have no sharp edges, minimal crevices and open seams, and adequate clearance and venting around any electronics in the head.


YOU

- 2+ years of mechanical design on robots or electromechanical products that were actually built.
- Fluent in Fusion 360. We need native Fusion files, not STEP conversions.
- Real experience designing FDM parts for end use: heat-set inserts, part splits, snap fits, print orientation.
- Solid understanding of fits and tolerances.
- Communicate clearly in English and work async with reliable updates.


TO APPLY

Start your proposal with the word "shell" so we know you read this. Include:

1. Photos of a 3D-printed enclosure or part you designed that was physically built, not just renders.
2. One specific DFM problem you've found in a printed part and how you fixed it.
3. How you'd split a curved, cosmetic head shell to minimize visible seams and supports while keeping service access.
4. Your hourly rate and availability per week.

We need a mechanical design engineer to support a manufacturing project with a focus on design for manufacturability. The work includes reviewing and improving existing designs, creating detailed drawings, and ensuring parts are optimized for production. You should be comfortable working independently, communicating clearly, and delivering accurate, production-ready designs on time. This is a part-time role with potential for ongoing work for the right freelancer.

Project Overview

VANTEXA, an emerging premium fishing tackle and outdoor equipment brand targeting the UK and European markets, is seeking an experienced Mechanical Product Design Engineer to develop an original, injection-molded plastic tackle storage system.

Phase 1 includes a compact tackle box and two complementary dual-sided modular storage pods. Future product development may include medium and large models.

We have already developed detailed 2D layouts, preliminary dimensions, compartment configurations, and functional requirements.

We need an experienced engineer to transform these concepts into a refined, mechanically engineered 3D CAD assembly suitable for functional prototyping and subsequent manufacturing DFM review.

This is a product engineering assignment, not simply 3D modeling or photorealistic rendering.

Scope of Work

The selected engineer will be responsible for:

- Developing complete, editable, parametric 3D CAD models from our existing 2D layouts.
- Refining exterior geometry to achieve a premium, original product appearance.
- Engineering practical hinges, latches, compartment covers, and secure closure mechanisms.
- Designing configurable internal storage, removable dividers, and ergonomic finger-access features.
- Developing reliable dual-sided modular storage pods with independently secured compartments.
- Evaluating suitable engineering plastics, wall thicknesses, draft angles, ribs, tolerances, and assembly interfaces.
- Optimizing the design for injection molding, durability, manufacturability, and efficient assembly.
- Identifying opportunities for shared components, simplified tooling, interchangeable mold inserts, and reduced manufacturing costs without compromising functionality.
- Preparing prototype-ready files and incorporating agreed feedback from functional prototype evaluation.
- Supporting initial OEM Design for Manufacturing (DFM) review and agreed CAD corrections.

The engineer should be capable of balancing premium product quality with practical tooling and manufacturing costs, particularly for an initial low-volume production program.

Required Deliverables

1. Fully editable, feature-based parametric 3D CAD models for all custom components.
2. Complete native 3D assembly with correct component relationships and references.
3. Native SolidWorks files (preferred) or another agreed professional parametric CAD format.
4. Manufacturing-compatible STEP files and prototype-ready STL/3MF files as required.
5. Detailed 2D engineering drawings with critical dimensions, tolerances, and material specifications.
6. Exploded assembly views and a complete Bill of Materials (BOM).
7. Preliminary DFM review identifying manufacturing risks, tooling complexity, and cost-optimization opportunities.
8. Agreed prototype-feedback revisions.
9. Final CAD corrections based on agreed initial OEM DFM feedback.

Physical prototype fabrication and related expenses will be agreed separately.

Required Experience

Essential:

- Proven experience designing plastic consumer products for injection molding.
- Strong mechanical engineering expertise in multi-component plastic assemblies.
- Practical experience designing hinges, latches, snap-fits, removable components, and precision interfaces.
- Advanced proficiency in SolidWorks or equivalent professional parametric CAD software.
- Understanding of plastic materials, shrinkage, warpage, tooling constraints, and manufacturing tolerances.
- Demonstrated experience taking products beyond CAD into physical prototyping and manufacturing.
- Experience with Design for Manufacturing (DFM) and manufacturing-cost optimization.

Preferred:

- Previous experience designing modular storage systems, toolboxes, plastic enclosures, or outdoor equipment.
- Experience working with Chinese injection-molding manufacturers.
- Familiarity with tooling-cost reduction, shared components, and modular mold construction.

Project Structure

We prefer a fixed-price, milestone-based engagement, covering:

Milestone 1: Design review, feasibility assessment, and engineering approach.

Milestone 2: Preliminary 3D CAD development and mechanical concept approval.

Milestone 3: Detailed CAD assembly and prototype-ready design.

Milestone 4: Prototype-feedback revisions, engineering drawings, and final CAD documentation.

Milestone 5: Agreed initial OEM DFM support and manufacturing-related CAD corrections.

The detailed scope, milestones, revision allowances, support period, and final price will be agreed before commencement.

Confidentiality and Intellectual Property

The selected engineer must be willing to sign a Non-Disclosure Agreement (NDA) before receiving proprietary layout drawings and technical specifications.

All project-specific design deliverables and agreed intellectual-property rights must be assigned to VANTEXA under the contract.

Complete, editable native CAD source files are mandatory.

How to Apply

Please provide:

1. Examples of actual injection-molded plastic products you have designed, preferably including photographs of manufactured products.
2. Examples of complex mechanical assemblies involving hinges, latches, snap-fits, or removable components.
3. A brief explanation of your involvement in prototyping, DFM, tooling, and production.
4. Your preferred CAD software and confirmation that you can deliver fully editable native source files.
5. Your estimated project timeline and fixed-price quotation.
6. A brief explanation of how you would approach tooling-cost optimization for a premium multi-component plastic product.
7. Confirmation that you are willing to sign an NDA and assign agreed project-specific intellectual-property rights.

Important: Applicants whose portfolios consist primarily of renderings or basic 3D models without demonstrated mechanical engineering and injection-molded manufacturing experience will not be considered.

We are seeking a capable engineering partner who can help establish the technical foundation for a long-term family of premium VANTEXA storage products.

We have 33 visually finalized, highly textured 3D character models (.STL / .OBJ) for an injection molded toy set. The meshes are high-poly and AI-generated, which causes standard parametric CAD software (SolidWorks/Fusion) to fail during standard shelling operations.
We do NOT need these models rebuilt from scratch. We need an expert who utilizes Materialise Magics or Geomagic Design X to automatically perform an Inward Shell operation on our existing meshes.
Requirements:
1. Create an internal hollow cavity with a uniform wall thickness of 2.5mm.
2. Add simple internal structural ribs (1.5mm thickness).
3. Budget is $250 fixed-rate for the full batch. We will test Letter 001 (Aleph) first for $35 to verify your software handles the texture cleanly without glitches.
Please apply ONLY if you have access to Materialise Magics or Geomagic and can shell complex high-poly meshes immediately!

I have a completed, factory-ready folder containing 223 small individual, loose .STL calibration tools (divided into 3 tracks: cones, pins, and small cups).

Because automated 3D printing bureaus penalize loose folder uploads with massive individual handling fees—and block standard visual plate nesting due to "multi-shell" factory policies—I need a quick CAD/print-prep specialist to physically connect these parts together using structural break-away runner bars.

Think of a plastic model airplane kit or a miniature miniature sprue tree.

Deliverables:
Exactly 3 or 4 unified, solid-body .STL files (one master tree for Track 1 Cones, one for Track 2 Lollipops, and one or two for Track 3 Cups).

Requirements:
1. All parts must be physically welded/connected to a thin rail web using 1.0mm to 1.5mm thin connector rods so the entire platter mathematically registers as ONE SINGLE continuous shell/solid object.
2. The connector rods must connect to the non-critical flat faces of the parts (the flat bottom base of the cones, the very tip/bottom of the lollipop pins, and the flat circular outer rim face of the cups) so the parts can be cleanly clipped off with standard hobby nippers after printing.
3. Parts must remain spaced out (roughly 2.0mm to 3.0mm apart) to allow room for the printing laser/curing process.

No 3D modeling, adjustments, scaling, or engineering math is required. Hammad has already finalized all dimensions perfectly. This is strictly a file assembly, layout, and nesting task.

I am ready to hire the first qualified applicant who can deliver these 3 combined solid files tonight. Please mention your experience with ChituBox, Lychee, Blender, or SolidWorks in your pitch. Thank you!

Hi, I'm working on bringing a product to life and I need help with the CAD design model for the first step. I'm looking to create four varieties of the same product and then test which one works best for the user. i've spent time really trying to get AI to make some preliminary sketches to communicate my idea to you, although they are far from perfect. Ultimatley, I am taking this baby formula dispenser : https://www.amazon.com/Termichy-Stackable-Dispenser-Portable-Container/dp/B0BJKGJZHW/ref=sr_1_1_sspa?channelId=500&clpRedir=Y&dib=eyJ2IjoiMSJ9.Nbef9VRmcZBUdxeVDaWMaYi4ewQdvQ6gCsGKkEd_UDRjwZwsQ5oLxBRNzz3FAnlfo-BURsdng76xrhdxgNNCFsgpf4zhoV13-3LBqAlrX-hrbc9z0NNvWE223UlE6GrP5VZwYOhfqsPTrLeOzQusSAQGX4NXLWbgXktaCkFFILh7HQUk2qA8FLRRiYsSup3I2CvRzKIEg7TEIzYFayayiBLMvsr2GonEYUQc3EPbDK6kZ7_lMRzwiq463Y-ntpZ3cKsSVhDTi3b_BBpuZiuL3RvbIVnA9voLw0w8uzqmAhw.h2mplSE3gKM2n2tvYVBeaOHKNwUX2i6LKUTsHI0kQyc&dib_tag=se&keywords=formula+holder&plpRedirect=mhFallback&qid=1793118194&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1. the issue is with this holder, there is no mechanism to know how many ounces or scoops are in each container. That is the solution i am providing with two different options. I also want to see if I create different shape containers such as the heart one. I would like detailed CAd drawings that I could take to a 3d printer to have prototypes made. Please review and let me know your thoughts! thank you.

MECHANICAL ENGINEER / CAD DESIGNER TO DESIGN AND DEVELOP A FULLY AUTOMATED LAPIDARY GRINDING MACHINE

Project: Full Machine Design, 3D CAD Modelling, and Engineering Drawings

I am seeking an experienced mechanical engineer, product design engineer, or specialist CAD designer to undertake the complete design and development of a fully automated gemstone faceting machine, inspired by the concept and capabilities of current machines which we will give an example of.

The goal is to develop a precision-engineered machine capable of automating the gemstone faceting process, from accurate stone positioning and indexing through to repeatable facet cutting and polishing, with minimal manual intervention.

Scope of Work

The successful designer will be responsible for the complete engineering design and development process, including:

1. Concept Design and Mechanical Engineering

Develop the overall machine concept, layout, and operating principles.

Design the mechanical systems required for automated gemstone cutting, indexing, angle adjustment, and polishing.

Engineer precision movement systems, spindle assemblies, workholding, and machine structure.

Incorporate suitable motors, actuators, bearings, linear guides, and precision positioning components.

2. Complete 3D CAD Design

Produce a full 3D CAD model of the complete machine and all major assemblies.

Design every mechanical component, including custom parts and mounting systems.

Create detailed assembly models showing how the entire machine fits together.

Provide a design suitable for engineering review, manufacturing, assembly, and future modification.

3. Manufacturing Drawings and CAD Files

Produce fully dimensioned engineering drawings for manufacturing.

Supply component drawings, assembly drawings, tolerances, fits, and material specifications.

Provide native, editable CAD files and STEP files for manufacturing and collaboration.

Include a bill of materials (BOM), with recommended motors, bearings, drives, sensors, controllers, and other components.


Support prototype construction, troubleshooting, and mechanical adjustments.



6. Testing and Final Deliverables



Deliver the final CAD package, engineering drawings, BOM, control documentation, and prototype assembly instructions.

Identify opportunities for cost reduction, improved performance, and future commercial production.

Ideal Candidate

The ideal candidate will have experience in:

Precision mechanical engineering and machine design.

CNC machinery, automated manufacturing equipment, or robotics.

Advanced 3D CAD software such as SolidWorks, Fusion 360, Inventor, or equivalent.

Motion control, servo systems, stepper motors, sensors, and machine automation.

Prototype development, manufacturing drawings, and commissioning.

Experience with optical positioning, or automated polishing equipment would be a significant advantage.

Project Requirements

The finished design must prioritise precision, repeatability, rigidity, ease of calibration, safe operation, and practical manufacturability.

The machine should be designed as an original engineering project. Any proprietary designs, protected intellectual property, or confidential information belonging to third parties must be respected.

Payments will be made via milestones as progress is shown.

Title: [Mechanical / Optical / Electronics / Firmware] Engineer for a Confidential Hardware Product (Remote, Contract)

We’re a small Canadian hardware startup developing a precision handheld/wearable device for professional users. The project is confidential, so full details are shared only after an NDA — but here’s what you need to decide if this is a fit.

What you’ll deliver

A clearly scoped work package with a written brief, target specs, and acceptance criteria before you start
Deliverables such as [CAD + STEP/STL files, drawings, BOM, simulation or test report] — we’ll confirm the exact list together
Short milestone reviews; nothing is “done” until it’s checked against the brief

Skills we’re looking for

Proven work in [e.g., small-part CAD for injection moulding / LED driver & battery electronics / optics design]
Comfortable with tolerances, DFM, and sourcing-ready documentation
Able to show relevant portfolio examples (sanitized is fine)

How we work

Fixed-fee milestones, agreed up front; small paid scoping task first, then the main work
Async-first: written updates every 2–3 days, one short call per milestone (Eastern time)
Direct, honest feedback both ways — tell us early if something won’t work or will take longer
NDA and full IP assignment required (standard work-for-hire terms)

To apply: send 2–3 relevant examples, your availability over the next 6–8 weeks, and one question you’d ask before starting a job like this. Short replies are welcome.