PTFE-tube joiner (M4 nuts)

prusaprinters

<p>So as the summary says, needed a quick way to join pieces of PTFE-tubing together. Originally was going to use push fit couplers, but they may mess up the tube if you need to remove and re-insert the tube multiple times. Also I've found that M4 is more secure if the setup is a high-presure bowden setup (i.e. single-nozzle multimaterial setup with powerfull geared extruders).</p><p>I've actually converted most of my bowden printers to use these so that the main portion of the tubing is replaceable.</p><p>Usage:</p><ul><li>print the parts, I've been using PLA and the parts seem to hold up nicely</li><li>thread M4 nuts to the ends of the PTFE tubes so that ~2mm of the tubes end is shown</li><li>the insert part is meant to be a quide which aligns the tube ends</li><li>join the tubes with the cap-parts by screwing them together by hand, no need to use tools</li></ul><p>I use this tool to help threading the M4 nuts: <a href="https://www.printables.com/model/265569-ptfe-m4-threading-tool">https://www.printables.com/model/265569-ptfe-m4-threading-tool</a></p><p>Source (OpenSCAD) here: <a href="https://github.com/spegelius/3DModels/tree/master/PTFE_joiner">https://github.com/spegelius/3DModels/tree/master/PTFE_joiner</a></p><p>&nbsp;</p>