Tronxy X5 YEndStopMount (Customizable)

thingiverse

Everyone who owns a TronXY X5 or possibly a successor is well aware of the flimsy Y Endstop. This small clamp sits atop an 8mm rod holding the end-stop switch and is secured solely by a 3mm screw that stretches the plastic to its limits, keeping the end-stop in place. And we all know what happens when this plastic breaks. The end-stop moves due to vibration until the print head crashes or the end-stop mount gets pushed further back until the head crashes as well. After owning the printer for about a year, I discovered it was broken once again. In total, I broke it twice and it was already broken when I purchased the printer second-hand. My long-term solution involved placing zip ties onto the rod so that the end-stop cannot bump back even if broken; however, this did not prevent it from rotating, making the switch inaccessible to the print head. In short, I sat down and designed a new mount that would require no maintenance in the future. To achieve this, I replaced the clamp mechanism with a simple closed guide for the 8mm rod and a self-tapping screw to prevent rotation and other movement. Requirements: 2 2 x 10mm self-tapping screws (to mount the end-stop itself) 1 3 x 5mm self-tapping screw (optional, to avoid rotation) Printing: Print vertically with the larger side at the bottom. In this orientation, no support is required. Use a generous amount of infill; I suggest 42%. This model is not large, so you won't waste much material. The self-tapping screws require sufficient infill to dig in. It's better to use a higher infill ratio once than reprint later. Installation: If your printer is properly calibrated, the mount block should slide over an 8mm rod without any force. If it takes some force, consider recalibrating your printer. However, using an 8mm drill will fix your part as proper accuracy isn't required here. Now take the old end-stop and screw it onto the larger section of the mount block. There are two minor dents marking the place to mount. Pre-drilling may be a good idea if you're concerned about switch compatibility or spacing. If you have a spare 8mm rod, search for a suitable screw for the fixator holes. There are four of them, but you'll only need one. It should be at least 5mm long. Pick the hole that's most accessible on your printer. Now loosen the screws holding the end-stop rod in place. Don't remove the rod; just pull it forward a few centimeters so it becomes free at the other end. Now slide over the end-stop mount with the end-stop facing the front of the printer and slide the rod back into its mounting place. Screw the rod back in, orienting the end-stop so it can hit the Y carriage and secure it with the fixation screw. Don't forget to reattach the two switch wires, and you're done. Before performing a real test, move the y-carriage by hand and listen for the switch click. If that works, you've successfully installed an end-stop that will never fail again. As always, I included the FreeCAD file so you can easily adapt the model.