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+--- Thread: How to Cut Thin Sheet Metal and Keep It Flat (/showthread.php?tid=1874)
How to Cut Thin Sheet Metal and Keep It Flat - 1-LVDCPN - 01-16-2018
If you use metal shears to cut thin sheet metal such as duct metal, it curls and can be difficult to flaten properly. These photo-steps show that it can be done using a utility knife. The illustrations are for a small bracket, but I have cut 3 foot long pieces using this method. You just need to be careful and take your time making several scoring lines and not pressing too hard. Snap off a piece of blade as necessary and don't use the thinest blades or the extra heavy duty types.