FLSUN QQ-S / QQ-S PRO Optical Limit Switch Mount
thingiverse
This is a mount to install an optical end-stop on a FLSUN QQ-S or QQ-S PRO. Included is a re-designed belt cover which incorporates the flag to activate the switch. This design adds roughly 30mm to the Z axis. The end-stop switches usually wear and/or break on these machines. The optical switch eliminates mechanical contact which quiets the machine and also allows the machine to keep a true bed level for much longer. I used these end-stops: https://www.ebay.com/itm/6X-Optical-Endstop-Photoelectric-Light-Control-Optical-Limit-Switch-for-Printer/174334177961?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Enjoy!
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