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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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How do you drill through stainless steel at home?
On Mar 8, 3:30*am, "Michael A. Terrell"
wrote: "Danny D." wrote: What's the trick to drilling a hole through 1/2" thick stainless steel? From my guardrail experience, I had bought titanium coated drill bits. So I thought it would be easy to drill a hole in a stainless steel can opener (for hanging on a loop outside by the BBQ cooler). Nope! I can't make a dent! *http://www5.picturepush.com/photo/a/...g/12362068.jpg What's the trick to drilling through stainless steel? * *news:rec.crafts.metalworking would be a better place to ask. (Added) You should have sharp drills with more relief that normal. But you can do it with regular drills. Stainless steel work hardens so you need to be cutting and not rubbing. You probably do not have enough horse power to use a half inch drill with no pilot hole. So start by drilling a hole about an eighth of an inch in dia. Be fairly agressive and use some oil. Any oil is better than none, but oil made for cutting stainless is of course best. You probably will not drill all the way thru without stopping. So when you stop retract the drill quickly. Again stainless work hardens . You want to be cutting or not cutting. No halfway . After you have drilled all the way thru with the 1/8 inch drill, move up to something bigger. Maybe a 1/4 inch drill. Followed by maybe 3/8 drill and finally with your 1/2 inch drill. Again be aggressive. Stainless work hardens. This advice assumes you are using a drill press. RPM needs to be about 60 sfm. So slower RPM with the bigger drills. If you are using a hard drill, good luck. Dan |
#2
Posted to rec.crafts.metalworking
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How do you drill through stainless steel at home?
On Mar 8, 7:08*am, " wrote:
On Mar 8, 3:30*am, "Michael A. Terrell" wrote: "Danny D." wrote: What's the trick to drilling a hole through 1/2" thick stainless steel? From my guardrail experience, I had bought titanium coated drill bits.. So I thought it would be easy to drill a hole in a stainless steel can opener (for hanging on a loop outside by the BBQ cooler). Nope! I can't make a dent! *http://www5.picturepush.com/photo/a/...g/12362068.jpg What's the trick to drilling through stainless steel? * *news:rec.crafts.metalworking would be a better place to ask. (Added) You should have sharp drills with more relief that normal. *But you can do it with regular drills. *Stainless steel work hardens so you need to be cutting and not rubbing. *You *probably do not have enough horse power to use a half inch drill with no pilot hole. *So start by drilling a hole about an eighth of an inch in dia. *Be fairly agressive and use some oil. *Any oil is better than none, but oil made for cutting stainless is of course best. * You probably will not drill all the way thru without stopping. *So when you stop retract *the drill quickly. *Again stainless work hardens . *You want to be cutting or not cutting. *No halfway . After you have drilled all the way thru with the 1/8 inch drill, move up to something bigger. *Maybe a 1/4 inch drill. *Followed by maybe 3/8 drill and finally with your 1/2 inch drill. *Again be aggressive. Stainless work hardens. This advice assumes you are using a drill press. *RPM needs to be about 60 sfm. *So slower RPM with the bigger drills. *If you are using a hard drill, good luck. Dan Agree with your comments about the drill bit relief angles, however he probably only needs an 1/8" hole (1/2" dia SS rod on handle of opener). |
#3
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How do you drill through stainless steel at home?
On Mar 8, 2:06*pm, "Denis G." wrote:
Agree with your comments about the drill bit relief angles, however he probably only needs an 1/8" hole (1/2" dia SS rod on handle of opener). I must be getting senile. i misunderstood. Dan |
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