Drilling machine

[mwmkravchenko]

Elegant. 3 tools needed to fabricate. Angle grinder, welder and piece of carbide to shape angle grinder disk for gear teeth. Two questions-- 1. How to hold spindle ball bearings inside square tube? 2. What is size or part number of ball bearings?

Could be a quick tack weld on the corner. Would not do much damage if any to the bearing and hold it in place.