Drilling through 22 guage stainless steel sheet
Drilling through 22 guage stainless steel sheet
(OP)
I am going to be drilling over 100 3/32 holes through 22 guage stainless sheet steel.
Any suggestions as to type of drill bit?
I am afraid that the drill bit will "run" if I don't make a strarter depression with a center punch.
If I have directed this question to the wrong forum, would someone please be kind enough to direct me to the proper one?.
Thanks a lot - Bob
Any suggestions as to type of drill bit?
I am afraid that the drill bit will "run" if I don't make a strarter depression with a center punch.
If I have directed this question to the wrong forum, would someone please be kind enough to direct me to the proper one?.
Thanks a lot - Bob





RE: Drilling through 22 guage stainless steel sheet
RE: Drilling through 22 guage stainless steel sheet
stub length (screw machine type)
split point
cobalt steel
Don
Kansas City
RE: Drilling through 22 guage stainless steel sheet
If you are doing it by hand it may run. Try a test piece and push down hard on the manual drill - almost makes it own depression. Back it up with wood. You might be OK....
Otherwise punch and drill. For that matter - get a a 3/32 punch and hit it with a hammer.
I am assuming you are only doing one sheet of this - otherwise - automate it or sub-contract it.
RE: Drilling through 22 guage stainless steel sheet
cnc punch with backing is good & cheap
cnc water jet no backing required.
cnc mill with backing
emuga drills
22 gage = .028" thick
3/32 dia holes =.0937 dia
ratio is good
RE: Drilling through 22 guage stainless steel sheet
RE: Drilling through 22 guage stainless steel sheet
The drill bits I got were Ex-Gold« Cobalt TiN Coated 130° Screw Machine Drills - 2 inches long.
The one I tried popped through the material very easily.
My only question now is how many holes will I be able to drilll before the drill dulls down.
Thanks again.
bob
RE: Drilling through 22 guage stainless steel sheet
You could use solid carbide, which would last longer. It might justify itself in leiu of going through a dozen or more of the cobalt drills. You might have trouble finding them in stub length though. A regular jobber would probably work fine, but I would chuck it up as deep as you can, leaving just enough exposed bit to drill the hole. Good luck.
Don
Kansas City
RE: Drilling through 22 guage stainless steel sheet
RE: Drilling through 22 guage stainless steel sheet
RE: Drilling through 22 guage stainless steel sheet
Mike Halloran
Pembroke Pines, FL, USA