M. Moore
Titanium
- Joined
- Jun 8, 2007
- Location
- Vancouver Island, B.C. Canada
Looking for info on how many holes I can drill and tap per tool in 304 SS as a rough number to help decide when to change to new tooling.
Size will be 4mm tap with a 3.3mm drill. The holes will be 12mm deep and the threads will be 8mm deep. I am using an auto reverse tapping head so I allowed for extra depth. The drills are stub cobalt TiN coated, the taps are spiral flute for steel/stainless, all ordered from McMCarr. I also curious as to the best peck depth for the small drill. I have read a few threads on here but there is no definite answer. One suggestion was to peck to the diameter of the drill.
I will have about 500 holes to do which I know is not a lot but stainless can be a bit of a pain if everything is not just right.
I have run some of these parts in steel and a few in aluminum and now my customer wants a large batch in stainless.
Thanks for the help.
Size will be 4mm tap with a 3.3mm drill. The holes will be 12mm deep and the threads will be 8mm deep. I am using an auto reverse tapping head so I allowed for extra depth. The drills are stub cobalt TiN coated, the taps are spiral flute for steel/stainless, all ordered from McMCarr. I also curious as to the best peck depth for the small drill. I have read a few threads on here but there is no definite answer. One suggestion was to peck to the diameter of the drill.
I will have about 500 holes to do which I know is not a lot but stainless can be a bit of a pain if everything is not just right.
I have run some of these parts in steel and a few in aluminum and now my customer wants a large batch in stainless.
Thanks for the help.