Blender 3D Prototype Creation

I have a consumer-product concept captured only in a set of rough sketches, and I need it translated all the way to a physical, 3D-printable prototype. The core idea includes moving parts and a set of interchangeable components, so the mechanism will have to work smoothly in real life, not just on screen.

Blender is my preferred environment for this project, though I’m comfortable if you draft ancillary files in Fusion 360 or SolidWorks as long as the master model stays in Blender. Starting from my sketches, you will iterate the mechanism, propose lightweight manufacturable geometries, and refine tolerances so the design can be printed, assembled, and tested without surprises. Material and process suggestions are welcome throughout—strength, weight, and ease of assembly all matter.

Deliverables I expect:
• A fully parametric Blender file with each part separated and named
• Engineering drawings or call-outs that define dimensions and tolerances for the moving and interchangeable parts
• Print-ready STL or OBJ files plus any support instructions needed for FDM or SLA printers
• A brief report on material choices, potential failure points, and next-step recommendations after the first physical prototype

If you’ve taken products from napkin sketch to working prototype before—especially those with articulated or swappable pieces—I’d like to see examples. Let’s bring this idea off the page and into my hands.