Quote Originally Posted by --ped-- View Post
std plastic probe needs the handle punching out and tapping 8-32 then it becomes the same as a steel breech probe
Hi ped
Amongst my many inherited taps I’ve found one that looks the right sort of size, it’s marked 8 with a 32 over the top of UNC is this the right one ? It also says drill size 2.9 ( presumably 2.9mm )
Testing it it seems to be about right to tap out the hole in the bolt

Cheers,

Norm