Drilling out a regulator arm..what size bit is best?

[Panzer_M]

broke two 7/64" bits on the pop rivets holding in the arm.

what the best size bit to use for this job?

[aceyx]

Make sure you use a center punch and some type of lubricating oil. I used a (solid cobalt) 1/4" bit, but had to follow up with a unibit and a pair of longnose pliers.

I forgot to post pics of me doing this (they're on the desktop at home). Be sure to clean up the metal shavings when you're done.

[Sergey]

I used a 6 mm drill bit.

Regards,
Sergey.

[Phil Marx]

I have a Snap-On air-powered drill and good bits but once I got nearly through the rivet it just spun, so I ended up using a chisel. I think if I ever have the opportunity to do that hateful job again I'd just start with a chisel, knock the rivets' heads off, and not bother with a drill.

[Panzer_M]

Originally Posted by Phil Marx

I have a Snap-On air-powered drill and good bits but once I got nearly through the rivet it just spun, so I ended up using a chisel. I think if I ever have the opportunity to do that hateful job again I'd just start with a chisel, knock the rivets' heads off, and not bother with a drill.

good idea on the chisel I am going to try that.