05-01-2020, 04:54 PM
I'll agree with Tom, never heard of counterboring a threaded hole. ??????
I have a few old ones I've collected here and there. A couple have replaceable pilots, I like those, can make a pilot for any hole then.
Rarely use them, almost always use an end mill after I've drilled the hole.
I have a few old ones I've collected here and there. A couple have replaceable pilots, I like those, can make a pilot for any hole then.
Rarely use them, almost always use an end mill after I've drilled the hole.
Free advice is worth exactly what you payed for it.
Greg
Greg