Ender 3 runout detection switch holder
thingiverse
I drew inspiration from markj113's design, taking it to the next level with my own twist. The switch is flipped over, allowing for a ball bearing filament guide that really makes a difference. This setup works seamlessly with standard KW3 microswitches, featuring a long roller arm for added stability. Runout detection can be easily integrated into either pin 27 or pin 29 on the mainboard, giving you flexibility and control. To ensure smooth operation, a small piece of PTFE tube is required to provide a silky-smooth filament path.
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