Originally Posted by
guru_florida
Hey, there was a Princess Auto in Dartmouth, NS where I grew up...you're not talking about the same place, eh? Those couplings, what are they doing in an auto shop? Could they be found at most auto shops?
Also, you say you are using brass sleeve bearings. Where did you get the rod? Can you tell me how well those work? (i.e. regarding friction and slop.)
I am building two machines. One small and precise, and another very large but with only reasonable precision required. The small one will cut robotic parts from aluminum, route prototype pcb's, drill, etc. The large one (about 42" x 80"), will cut and shape dense foam or wood for kiteboards/surfboards and other unrelated wood kits. The sleeve bearings may be adequate for this large version.
Colin