/diy/ - Do It Yourself

>>1568917
my old P&W is like 7k lbs, so 3 tons

it was also $1,500 because the guy wanted the room for another CNC machine pretty badly

it works and it peels off material like nobody's business with 7.5hp, but a cnc lathe in the 4-5 HP range would probably be more useful.

CNC is amazing

>>1568963
lol

>>1569078
this, try turning a close-fitting rod for the ID of the tube and then he can really clamp that fucker down without crushing it

I used a piece of paper to shim up the slack between the undersized OD of the bolt threads and the collet contraction (it's also an old fucked up collet).

Measuring from ID to OD it's a few thousands off one way or another so not great precision--it is expedient though, pic related.

What OP should do is drill or bore an undersized hole in a round piece of aluminum held in a 3-jaw then make a slice down the side so it can compress and hold the bolt under tension from the 3-jaw chuck.

That would probably be more accurate than a collet and a piece of paper.

Reason I wouldn't just hold it in a 3-jaw is because for one the bolt might be too short, for two it will fuck up the threads.