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Unpaking 4-jawK72 chuck. Full of dirt and grit

182: Unpaking 4-jawK72 chuck. Full of dirt and grit
181: My standard for 220V
180: B&S LVDT head - need docs
179: B&S LVDT head - need docs
178: lapping project Cheap motor speed control. Connector reverses - reversing direction.
177: lapping project motor bracket welded. Need lathe to make pulleys.
176: lapping project Profiling edge
175: Lapping machine project - motor mount plate, and skid plate.
174: Chinese ER collets - not EDM - full of burs - needs hand finishing work. I found a old rusty feeler gage blade - roughened up the edge on the grinder - worked pretty well to file out some burs.
173: Surface roughness tester Surftest 211 Disassembled Not the greatest design for the time - 4PCBs too many connectors. No need for two uP. All it needs to do is preamp, motor voltage, A/D UI. Don't recommend Mitutoyo - they go after people sharing manuals, no parts support on older units.