Magnetic Ball Joint Rod Ends

thingiverse

These are designed to work with balls that are 3/8" in diameter, carbon fiber rods which measure 0.230" in diameter, and cylindrical magnets measuring 10mm in diameter and 15m high.\nThese can be printed using a layer height of 0.2mm or 0.1mm.\nPrint these with a shell thickness of 2mm, so that all walls will be printed with concentric circles instead of back-and-forth infill.\nFor printing with PLA, use a relatively low temperature, such as 185C, to get the overhang inside ball bearing sockets out cleanly as possible.\nClean out ball bearing sockets using a 3/8" ball end mill in a gentle manner.\nNote that I need to print at least two of these at a time to get the correct dimensions.\nI usually print a dozen ball bearing holders followed by another of the rod ends - I don't mix them in one print run.\nI use these with my magnetic effector, available here: http://www.thingiverse.com/thing:1546124\nAnd also with magnetic carriages found here: http://www.thingiverse.com/thing:1546091\nIf you need a low-cost source for ball studs or magnets, please contact haydn.huntley@gmail.com.\nI sell the ball studs for $1 each (12 are needed) and the magnets for $2 each (and I include printed rod ends with the magnets).\nPrint Settings:\nPrinter: Kossel\nRafts: No\nSupports: No\nResolution: 0.2 to 0.1mm\nInfill: Concentric circles\nNotes:\nThese are designed to work with balls that are 3/8" in diameter, carbon fiber rods which measure 0.230" in diameter, and cylindrical magnets measuring 10mm in diameter and 15m high.\nThese can be printed using a layer height of 0.2mm or 0.1mm.\nPrint these with a shell thickness of 2mm, so that all walls will be printed with concentric circles instead of back-and-forth infill.\nFor printing with PLA, use a relatively low temperature, such as 185C, to get the overhang inside ball bearing sockets out cleanly as possible.\nPost-Printing:\nClean out ball bearing sockets using a 3/8" ball end mill in a gentle manner.\n12 ball studs are needed (you can make your own if necessary).\n12 N50 magnets measuring 10mm in diameter and 15mm high are required.\n12 carbon fiber tubes with diameters of 0.230 inches are also necessary.\nAt least two 3/8" diameter ball bearings are required, as well as super glue and/or epoxy.\nI offer assembled printer arms using these components in standard lengths of 215mm (Kossel Mini), 288mm (full-sized Kossel), and 304mm for $60 per set.\nThese arms are individually measured and marked, and within a set all arms match to within 50µm or less.\nEach individual joint is tested to have a minimum of 1kg of holding power.