Green Day Heart Hand Grenade Sign

*Updated: 8/14/2017* -- Added HeartGrenade-Black.stl, HeartGrenade-Red.stl, HeartGrenade-White.stl for multi-extrusion machines, like the Prusa i3 MK2 with MMU. You can print the original SIGN-GD.stl, and change filament at the appropriate layer heights or you can slice with these three STLs to print all colors using multiple extrusion.

All credit for this goes to to the original artist -- I simply traced the image and extruded and printed it in three different filaments. I'm not even sur