Shark fin
thingiverse
Because who doesn't want a sharkfin, especially if it means you don't have to kill a shark to get it. Round bottom has a slot that fits a 2.5" web belt and a curve so it should sit flat on an AL80 tank. Flat bottom has no slot and a flat base. Scale them down to 78% to fit a Prusa Mk3 when printing the fin vertically. The web slot gets too small if you go smaller.
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