Aquarium brim, corner protection bumpers
thingiverse
I deigned this brim because my Zebra Nerite Snails are constantly escaping from aquarium. At the time of writing I do not know will it be effective but it should. Corner parts can be used as a protection bumpers. I exported few different lengths bout you should be able to scale the part only on one axis which corresponds the length and obtain custom lengths. At least Cura has this option.
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