A problem I've noticed with cheap tools is they aren't always the size they claim....
Problem solved, new tap cut like a hot knife in butter. Wont be buying any more tools from Machine Mart...........

Compound table is useable after all lot of rework. (Think it was cast, rough milled and bolted togother)

The bit I'm struggling with is eliminating backlash in the acme screw. I've Cut a slot and fitted a pinch bolt, but as the screw and thread are so rough the friction caused is not good.

My question is how critical is it to completly eliminate backlash or is the compensation in Mach able to overcome it?

I can probably improve the current state (about 2 or 3 deg. as a guess) but will take more time...

Photos soon If anyone is interested