Quote:
Originally Posted by MarkB
Acetal is bonkers. I spent hours machining stuff when I worked for a motorsport firm at Silverstone only to find the holes I bopped up the spout were undersized yet I used the right drill bit...it seems the speed of the machine and how quick you bop the holes has an affect as well as I never had one hole that was the same.......freaked me out, it was as if some ghostie type changed the drill bit each time i used it.
Facing off a rectangle of acetal in 3 jaw chuck was just as frustrating...  |
you really should be locked up.....for your own safety......lol
you,ll be using four jaw chucks and trying to self center hex bar next
slow and steady wins the race
proper center to start
nice sharp new drill bit nice and slow and all is well
and a reamer helps as well
if you go at it to fast it can pull off centre
cheers les g