[NateBot16]

We welded ours to our frame, not the best idea now that I think about it, but not much we can do about it now. Basically we have one centeral column going up our robot, at the top there is a notched out area, and a hole going throught the side walls. Then we put a bearing and axel in there. The area with the notch is for a movible arm. We just drilled a hole thought that, and placed it on the axel going throught the centeral column. Finally we just hooked up a motor to the base of the centeral column, put cable around it, and attached the other end to the moviable part. And "waaa la", an arm.

I would highly suggest bolting it, just becasue welds are not fun to break.