Cut a portion of the intact siding material to match the piece you just cut out.
Best way to cut a hole in aluminum siding.
While cutting at the width of the aluminum siding make use of straight tin snips.
Sand the corners of the area you cut and lightly sand an area of about 1 inch on both sides the top and bottom of the gap.
Step 2 weld the patch onto the aluminum with a propane torch.
Hopefully you have a set of tin snips that will allow you to make cuts in any direction.
Cut a piece of aluminum about 1 inch bigger than the hole using tin snips.
When using a hole saw to drill the hole in aluminum siding keep the saw slightly tilted to one side to reduce the chances that the hole saw will bind while cutting the hole.
If you notice that the saw binds pull the hole saw away from the siding tilt the hole saw in a different direction and restart drilling the hole.
A nibbler is made from two small blades that vibrate up and down at a very high speed.
Place the patch over the hole holding it with a steel clamp.
The less you have to cut the better.
For these kinds of cuts tin snips are very handy.
Use a nibbler to cut in a straight line.