Traxxas Ball Joint Arm Assembly Jig

thingiverse

FYI for some reason when exported as .STL, Autodesk twisted the part around so use Thingiview to get a good look at the actual STL. Anyway. This is a rod ball jig for Traxxas 5347 ball joints and 10mm OD CF tube. YOU NEED TO PRINT TWO OF THESE TO BUILD DELTA ARMS. You can use this for any length delta arms as long as it uses 5347 ball joints and 10mm CF tubing. Just square them up so the post centers are your delta_arm_length, make absolutely sure they're square, and then the rest goes as follows: 1) Cut your 6 CF tubes to length, they should be damn close but don't HAVE to be exact because of the epoxy putty. 2) Spray some hairspray on the jigs. This way, if the epoxy putty for whatever reason decides to bond, a dip in some warm water will help it release. While you're here, sand the shanks of the ball-joints. These will go inside the rods, and the sanding will help it all bond together. 3) Take a small bit of epoxy putty, form it around the shank of the ball joint, and insert into the end of a CF tube. Repeat on the other end, and press it into place in your jig. Form the ooze into a sort of cap (BUT MAKE SURE YOU DON'T GET ANY PUTTY IN THE ACTUAL SOCKET) so that if it does let go of the inside of the tube or ball joint, it'll line right back up. 4) Repeat step 3 5 more times, and leave it to cure. 5) Once the epoxy putty is cured, press the ball portion of the ball-joints into the ends. The CF rod I used, cut with a pipe cutter and an X-Acto to clean up the edges. http://www.amazon.com/ARRIS%C2%AE-Outer-Wrapped-Carbon-Surface/dp/B015Z1RU6U?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s01 The ball joints in question, inserted into the ends and held with epoxy putty. http://www.amazon.com/Traxxas-5347-Hollow-Balls-Large/dp/B000BOLVJY?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s00 Print Settings Printer Brand: RepRap Printer: G2s Pro Rafts: No Supports: No Resolution: 0.2mm Infill: Any greater than 20% Notes: Use 3 perimeters, printing from the inside out.