About this 3D model

This jig is used to make consistent length magnetic ball joint arms for the Cerberus, [Cerberus Pup](https://github.com/grabercars/Cerberus_Pup_170_GT2_belt_drive), and other Rostock deltabot printers. Requirements: 1. 3/8" steel ball bearings 2. 3/8" x 3/8" cylindrical neodymium magnets 3. Carbon fiber shafts, such as arrow shafts 4. High-strength glue capable of bonding metal to carbon fiber (I used Loctite Metal / Concrete epoxy, others have used JB Weld) Print two and mount them onto a length of wood at appropriate distances using screws. NOTE: * The provided STL uses a 7.28mm diameter carbon fiber rod in the model. If your CF rod has a different diameter, [download the SCAD](http://www.thingiverse.com/download:334677) and edit it in [OpenSCAD](http://www.openscad.org/), adjusting the cf_rod_dia variable appropriately. * Assembly instructions are in the [Instructions](http://www.thingiverse.com/thing:176647/#instructions) section.