About this 3D model

This follow focus is based on the professional follow focus with AB limit function. If you have a 3D printer, then print it, and you will have a 3d print professional follow focus in your DSLR shoulder rig. What else you will need? M330mm screws 2pics M35mm screws 2pics M3 (4mm) injection nuts 2pics worm gear: A:OD18.6mm ID6mm ; B:OD12.8mm ID4mm ; Ratio:1:5 link:https://item.taobao.com/item.htm?spm=a1z09.2.0.0.ObNU1k&id=17352109451&_u=565kgh672ff