Arm Work

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 the photos you can see basically how the new elbow hinges go together (if you look closely you can see the 3mm rod and polycap inside – when the hinge halves are pressed together, the joint appears as a solid sphere.) and roughly how the whole thing will look when completed. The modified hand part is also in the “Arm Progress” photo. The arm cuff took some time because I wanted it to look good for recasting, and to be convenient to fit onto kit parts with just minor alterations. Plus I was working with Bondo instead of my usual, preferred Doro Doro poly putty…. Don’t get me wrong, Bondo’s great for some stuff – Bawoo’s done incredible stuff with it and I’ve done some reasonably good work with it, too – but in some ways it just can’t compete with Doro Doro. There simply is no comparison. Now I’m off to make the mold to recast the upper arm cuff… (Mold preparation takes a lot of time, since the rubber needs to cure, so it’s not something that can be delayed at this point!)