I figured you'd have some,Daren..the 90 degree tool we used a lot for the older laminate metal trim for backsplashes,cutting everything but the bottom bead...that way you always get a perfect 90 degree for the corners and the bead bends.Gee..I wonder how many people here have that old metal trim around their kitchen counter backsplashes or shower laminate tub enclosures..raise your hands..who's guilty?!
The smaller is a 30 degree tool used a lot in vent piping and duct work,especially for connecting new round duct boots to square ducts by running that tool around the end for tabs with 30 degree angles on the sides.Then the tabs are bent,every other tab inside the hole and out to connect it to the major duct...I'll have to think about Daren's dovetails,but I would think it would cut the wrong direction(skinny end deep in the cutters)...Hmm
The other one Daren guessed is a punch(Sargent) that also sets eyelets in paper or plastic sheeting..could work for thin metal I guess.The depth from the edge can be set with a gauge so they all line up..Think stoves and windscreens..Hmm..now what could you do with that?Lace-able windscreens connections?Joining windscreens together with screws through eyelets?..or joining pieces with just the eyelets!....I see options!

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