Just about done. The shitty chinese steel base broke my last M8 tap which slowed me down a bit.
Got the headstock on and clocked up better than 150um over the 300mm length of the bar. That’s about as good as it’s going to get. There’s >50um of run out in the chuck and the end of the bar moves 200um if I lift one corner of the base..
The aluminium plate for the tailstock is warped, so I’ll flycut that and shim the tailstock over the weekend..