Place the tips of the.
How to cut a hole in aluminum sheet.
To setup the punch first drill a pilot hole into a piece of sheet metal with a step drill bit.
Like twist bits hole saws chuck right into your drill and will cut through thin gauge sheet metals like aluminum and steel.
At first locate the center of the whole.
I would suggest rough cutting it out about 1 8 oversized.
Then cut it to final size using a router table with a straight cutting bit carbide and a compass jig.
Step 2 weld the patch onto the aluminum with a propane torch.
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Place your sheet metal on your steel block and position your centre punch at a central point in your cut out design.
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Depending on the tools you have you ll now need to punch or drill a hole where the indentation has been made to produce an accurate hole in your sheet metal.
Use a scrap of plywood as a backer for the hole saw s pilot bit and to protect your work surface.
The jig would need a nail or some other small hole in the middle that you would spin the material on rotating it into the bit.
Place the patch over the hole holding it with a steel clamp.
The punch is then.
Next use a.
Hole saws cut bigger holes for large holes a hole saw gets the job done cleanly and quickly.
Cut a piece of aluminum about 1 inch bigger than the hole using tin snips.
Tap your hammer to leave an indentation on the sheet metal.
How to cut a round hole in sheet metal.
Then create a pilot hole within the penciled circle using a power drill fitted with a 1 2 inch or greater metal cutting bit in order to accommodate the jaws of the tin snips.