The basics of aviation snips (sometimes called "tin snips").This is the go-to tool for rough shaping of sheet metal, though they're useful on a bunch of other things, too!Become a patron: https://www.patreon.com/justtoolbasicsAffiliate product links:All are Wiss brand or Midwest brand -- both Made in USA.Long-cut straight snips (blue handle): https://amzn.to/32vP1p8Regular jaw triple pack (Straight, Left, Right): https://amzn.to/36nLlqzOffset jaw triple pack: https://amzn.to/2IjGU7UUpright jaw (for even tighter curved cuts)- Right: https://amzn.to/32uW9Cd- Left: https://amzn.to/2UakKrs