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A project log for Affordable bionic prosthesis

This project aims to create an affordable lower limb prosthesis for above knee amputees using hobby grade components.

maximiliano-palayMaximiliano Palay 05/27/2022 at 15:520 Comments

After finishing the 3D printing process, the next step was gluing the two body halves together. The design incorporates four channels to place four threaded rods at the joint to strengthen the structure.

Had to remove A LOT of support structures.

After joining the two halves together with the help of epoxy and the M3 threaded rods, the time came to make this look good. The quality out of the printer isn't as good as an injection molded part. Of course not. But I wanted a look that resembles a commercial product. It could be metallic or plastic, but smooth surfaces.

Using a pneumatic sander, the surface was smoothed down to 360 grit.

Sanding down the unified structure. Although this was at an early stage, the contrast between sanded and unsanded is clearly seen.

Sanded down structure.

The real aesthetic magic was done with the paint job. It provided a metallic look. This was carried out by an auto body shop, which painted it with regular automotive grade paint and applied a clear coat on top.

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