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I will design custom kinematic joints, linkages and motion driven mechanisms for device
John
About this gig
Are you developing a device that needs controlled motion, a working mechanism, or a linkage system that actually functions the way you've imagined it?
I design kinematic joints, linkages, and motion driven mechanisms taking your idea and developing it into a mechanical system built to move correctly.
What I offer:
- Kinematic joint and linkage design
- Motion transfer mechanisms like: rotary to linear, cam driven, gear driven, etc.
- Articulated and multi bar linkage systems
- Robotic and automation motion components
- Mechanism concepts developed from sketches or written requirements
- Design revisions on existing mechanisms that aren't working as intended
How I work:
- You share your requirements sketches, reference images, dimensions, or a description of the motion you need
- I review feasibility and clarify constraints before modeling
- I develop the mechanism in CAD, checking motion and clearance as I go
- You receive CAD files, motion preview or diagram, and revisions if something needs adjusting
Deliverables can include:
STEP, IGES, native CAD files, motion diagrams/animations, and technical drawings for prototyping matched to what your next step requires
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Delivery style preference
Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.
Get to know John
John
3D CAD and Mechanical Design Engineer
- FromAustralia
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, Spanish, French
I design 3D CAD for mechanical products, functional mechanisms and manufacturing.
My work spans kinematic joints, linkages and motion driven mechanisms, reverse engineering of worn parts, castings and scan meshes, plastic housings, snap fits and bosses, plus CNC fixtures, jigs and machining ready components.
I take concepts, existing parts or engineering requirements and turn them into editable CAD models ready for prototyping or production.
Deliverables can include STEP, STL, IGES, DWG, DXF, PDF drawings and native CAD files as needed.
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Other Industrial & Product Design Services I Offer
FAQ
Do I need to know CAD or engineering to work with you?
No. You can send a sketch, a reference image, or just a written description of the motion you need. I'll clarify anything unclear before starting.
What software do you use?
SolidWorks and Fusion 360, depending on the project. I can also export to formats compatible with most other CAD systems.
Can you tell me if my mechanism idea is actually feasible?
Yes feasibility and constraints (space, load, speed, materials) are reviewed before modeling starts, as part of the process, so we catch issues early rather than after the design is built.
Do you provide motion simulation or just static CAD models?
I check motion and clearance during modeling and can provide a motion diagram or animation as part of the deliverables. For advanced dynamic simulation (forces, stress, fatigue life), let's discuss your specific requirement first.
What file formats will I receive?
Typically STEP, IGES, or native CAD files, plus technical drawings if needed for prototyping or machining. Let me know your intended next step (3D printing, CNC, further engineering) so the files match it.
Can you fix or improve a mechanism I already have that isn't working properly?
Yes, I take on design revisions for existing mechanisms. Share the current design and what isn't working as intended, and I'll review it.
Do you design the mechanism only, or the full device/product around it?
This gig focuses on the mechanism itself — the joints, linkages, and motion system. If you need the surrounding housing or enclosure designed too, message me and we can scope that separately.
What information should I send to get an accurate quote?
Sketches or reference images, key dimensions or space constraints, the type of motion needed, and any load/speed requirements you're aware of. The more detail upfront, the fewer back-and-forth questions later.
Can this be used for robotics or automation projects?
Yes, motion components for robotic and automation systems fall within this gig. Send your requirements and we'll go from there.
