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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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Drilling clean holes in thin sheet
I've got a little 3oz fuel tank (model airplane) made out of thin
tinplate (a Dole Pineapple Chunk can, actually). So, maybe about 10 or 15mil, with corrugations. I need to drill a 1/2" diameter hole in it, to solder in a fitting. I know that if I use a regular 1/2" twist drill I'll just rip out big hunks of tin -- so that's a no-go. This is a last-minute rework to get me to a contest this weekend, and I've spent out the modeling budget this month. So I'd like to be able to do it with tools I have in the shop rather than spending time or money I don't have to order something, or even nip around to Horror Freight. I have a nice stepped drill that goes up to 1/2 inch, but it's longer than the tank. I may just go ahead and drill through and patch up the far end -- but if there's a better solution, I'm open to suggestions. -- My liberal friends think I'm a conservative kook. My conservative friends think I'm a liberal kook. Why am I not happy that they have found common ground? Tim Wescott, Communications, Control, Circuits & Software http://www.wescottdesign.com |
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