This is what I’m working on. Drilling and counter boring the holes for the lathe catch plate.
You can get proper drills for such things
Yes I agree, best if you dont turn the rotary between changing bits though, just incase. The proper bits are for when you dont have luxuries suchs as mills and DRO, or dividing heads etc.
Well that came out **Language** up. I’m about 1-1.5mm out on the opposite hole. God knows whether we wasn’t completely concentric or there is some error in the rotary table. Gonna have to do it again but I may just use a transfer punch!
There’s not really enough meat in it to be honest.Clearence size the holes itll be fine.
There’s not really enough meat in it to be honest.
I went up to 9mm holes and it’s no where near. I’ve centre marked the holes with a transfer punch now, will drill it tomorrow.
I did set the whole thing up again on the mill, and the holes came out the same distance out. Can’t work it out. I’ve centred the rotary table on the mill to within 0.04mm.
Then centred the part on the table to about 0.1mm.
It must either be run out or slop in the rotary table or the holes drilled in the backplate are not concentric to the register on the backplate.
I’m gonna make the part again at some point it’s just annoying me how I keep ending up out of whack. I wasn’t super happy with the fitment of the register it had a thou or two slop in it.not ideal but could you not elongate your holes with a suitable endmill,