Chỉ báo đùn nhựa Biohazard (Biohazard Extrusion Indicator)

Prints very easy.  No supports required.  Start with Black, then halfway through there's a M600 color change.  Use whatever color you want, the shinier the better.  Use two 8x3mm round magnets glued together, then glued to the back of the symbol.

The rounded contours of the symbol give it a snake skin effect when printed in a silk PLA.  Post different colors for different moods.  Happy printing.