fix for print skull —

Founded fix for print skull models & stl files for printing
Hammerhead Skull
MakerBot
skull hinge adjustable
Cryptid Unknown
Raccoon Skull
DocCopemys
Flaming Skull
Desertpilot
Raven Skull
Menguy
Skull Keyring
3DPrintBunny
Demon Skull
Caleb Kraft
Skull Paracord Bead
ScarcelyLucid