Scratch-built center foot

I'm getting in on JAG's metal center foot run, but I need a foot before the end of the month so I'm building my own. Using some 1:1 drawings from my buddy Nick, I've got a pretty good set up so far. Aluminum bar for the frame with layers of birch ply built up for the form, then skinned in styrene. I'm using the same ball casters from McMaster Carr that will be used on the JAG foot. I'll transfer them later on. I'll probably re-use this foot for my next droid.