Ah, good point about the cradle. I have some old wood from a AW arena build that I can use for that. Yeah, in building my Middleweight, I figured that the 230+ bolts in it would contribute to the weight. It turned out to be more than I expected as well. Once there is a bit less weight swinging, the jumping might be alleviated.

Won't the Dremel do for for sharpening the wedge (remember, you need to have a cover for sharps protection)? I'll probably end up doing that with Shu! when I tidy up the new arm.