inverted plumbus
thingiverse
the very useful Plumbus from Rick and Morty intersected/inverted one is the main one it is used to print a negative mold so you can make it out of rubber or silicone for greater show accuracy. caution: untested and not scaled to standard bed sizes. again sorry for all the polys universal reference sheet: http://sta.sh/05gdjzyi2cs
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