If electric powered nibblers won t work for your project you re going to want to consider using compressed air.
Cutting sheet metal with air hammer.
A soft wood backer will allow for the chisel to pass through more easily by providing support for the metal.
It works on up to 17 gauge cold rolled steel and will easily cut through sheet metal without deforming the edges.
Do not force it to cut faster as that will overheat the tool and the metal.
Best air metal nibbler.
Panel shaper bit kit by steck.
When you need to edge light sheet metal without stretch or distortion use this sheet metal trimmer and eliminate much of the touch up grinding that is necessary with other trimmers.
This is not designed to be a panel cutter.
Make precise distortion free cuts in 14 gauge aluminum or sheet metal as thick as 16 gauge with this high speed cutter.
This tool has the exclusive oldforge curl cut.
Precise distortion free cuts in sheet metal as thick as 16 gauge.
One of the pneumatic nibblers worth considering is the astro pneumatic 727.
If you ve hit it hard enough the chisel will cut the sheet metal if it s thin enough.
Simply line up your chisel along the line you are going to cut and strike the back of it with a hammer.
It s many uses also includes cutting off rusty bolts and muffler clamps.