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| Bending, Forging,Extrusion... Discuss Bending, Forging, Extrusion technique's here. |
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#1
 
12-01-2008, 03:11 PM
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I need an adaptor for a gas stove , exactly 4 and 1/16 OD.Using galvanized sheet metal .o15 Using the formula, what is the length needed. I will add for crimp and rivet so dont include that. thanks. Also is there a cheap metal stretching tool available to tweak sheet metal pipe end sizes , not extreme stretch but just small ones.  |
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#2
12-01-2008, 09:28 PM
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| You want to know the circumference of pipe. The equation is diameter*pi=circumference. pi is equal to 3.141592.... So you need a piece 4.0625*3.141592 = 12.763" wide. This should get you pretty darn close. There are tools like what you want for exhaust tubing, I would assume they make larger ones, dunno. There are also machines like rollers which can bead, stretch or shrink metal, I don't know anything about them but I know they exist. Matt |
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