CR-10S Filament Detector Holder plus Filament Minimum Bend Guide

thingiverse

This is a holder to replace the stock filament detector that is a friction held bracket. The stock CR-10S uses a microswitch mounted on a pcb to detect the presence of the filament. I have found this accessory to never stay in place on the printer and it is always dangling after a print. Another complaint is that there is no minimum bend guide for filament entering the printer from the spool so at times the angle that the filament is entering the feed can be sharp which may snap a filament that has been exposed to air too long. I found that some M4 standoffs can be used to attach the holder to the motor and guide wheel bracket that is on the Y-axis. The standoff I use is a 10mm long with a 10mm long threaded section screwed on to what is left of the existing thread. I do not remove the hardware holding the guide wheel or motor assembly. Note that I am using a couple of other standoffs as nuts on the other side. An added bonus with using the minimum bend guide is that the filament is way easier to feed in when loading a new reel.