They may not look like much but this handful of 5 mm ball studs represents the final internal pieces for my current cast of characters. 6 weeks of waiting and all the way from China, these little R/C car parts are used in all the smallest joints (neck, elbow, jaw) on my puppets. To make a truly professional ball and socket armature you need a metal lathe. I’ve toyed with the idea of getting one over the years but I keep coming back to these pre-made parts and their ease of use. They may not be custom but they sure do work.