Limited Range Neck joint

thingiverse

This is a really simple hinge joint that I knocked up for a skeleton skull animatronic movement. I've made it in a few combination for both flat mounting or fitting inside a 21.5mm plastic pipe, which is a favorite for DIY builders. The range can be limited to -10 to +45 degrees (I think?) by inserting a piece of wire or filament into the smaller hole.The tube mount and main hinge are sized for M4 (3.7mm) so drill out for clearance or tap direct as needed.The flat mounts are sized for M3 (2.8mm) so as above as needed. Update. I've added a 3rd version with an oval base that fits better with skull and spine. It also uses 1.75mm filament for the pivots instead of wire or bolts.