Just built this Collet Chuck for a friend after i cleaned up his rusty dusty U3.
All done on the Unimat 3 except the M14x1 Tap and?my Thread cutting setup and top?slide from my lathe.
I purchased the Collet Nut and Collet to fit his slotcar armatures.
Runout is less than 0.01mm or 4/10000" I'm happy.
