In the last update I described work on a three-part hinge that was to start with the use of the drill press to drill a hole through a block of styrene, perpendicular to the bottom face of the block, and use this as the core segment of the hinge. This was the basis of my […]

Since the last update I’ve abandoned the idea of creating a two-part spherical hinge for the elbow in favor of a three-part hinge. I could explain the design but I find pictures communicate these ideas better, so there’s a mockup photo to see. Just picture the middle part attached to the model’s shoulder, and the […]

The Otakon deadline has come and gone, of course, and Patcon is coming up, most likely to zoom by me before I can finish this project. I’ve decided that I’m not entirely happy with the original elbow joints that I made (though I think they were nice work, and it’s great to see how simply […]

After an emergency trip to the art supply store in Cambridge to get more mold rubber, I recast the cuff part for the upper arm and rigged up a simple test-shot of how the assembled arm will look, and comparing it to the original parts. Hopefully the results speak for themselves. In addition to being […]

Creating a pair of spherical hinges took about two hours work. They’re just slightly misaligned, which is unfortunate, but I don’t think it’ll be a big deal for this first Sumo. I also took another four hours to create a new uper arm cuff which I’ll recast to create upper arm and forearm parts. In […]