C-3PO arm greeblies and bits

thingiverse

These are the decorative pieces for the arm models that I've submitted so far. The elbow attachment has a dimple to match the locating nub on the elbow collar, which makes for a precise fit. The slider parts fit into flat spots on the arm and have tracks for sliders that I'm still working on designing. Once the slider is installed, the open end will need to be plugged with a small piece that I'll post when I complete it. The greeblies are just glued on by eye, as their positions aren't critical for function. Better late than never: I promised at some point to add some detail about the piece I intended for the piston connector, and here it is. I've attached a snapshot of the model and a PDF drawing. The piece is made from some extruded aluminum that I bought. It's a 1"x1" 'L' shape that is 1/16" thick. I printed out the drawing, cut out the profile in actual size, and then used a hacksaw and files to shape it to the paper. Once it's all fitted, I just epoxied it in place.