The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.
Bending 22 gauge sheet metal.
If you want a sharp 90 bend tap along the crease with a mallet.
22 gauge 0 030 0 76 mm.
A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.
Keep in mind that some metals are more brittle than others.
The metal should bend but only bend it as far as it goes without forcing it.
The material thickness will be measured in decimal form not by the gauge number.
For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter.
Category thickness minimum bend bend radius.
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22 gauge 0 030 0 76 mm 0 5 12 7mm.
Grab the top of the metal with the pliers as the section you heated cools off and pull towards you gently at first.
Clamp the wood on top of the metal to the workbench.
0 017453 x 90 x 0 020 0 33 x 0 024 0 0438558984 inch bend allowance.
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If you need to reheat the metal and redo the bend.
You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.
As an example if you want to bend 24 gauge sheet metal at a 90 angle the calculation would be.
Simple sheet metal bender using a hand roller clamps and plywood.
Next place the wood parallel and slightly behind the bending line.
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Bending a brittle metal beyond its limits could cause the metal to snap and break.