Ender 3 Automatic shutdown (+Source Inventor)

thingiverse

This will let the nozzle head hit the switch and turn off the printer. Make sure to use wire and a switch that can handle the load! Since this is AC, I recommend switching both + and - wires, and connecting the earth together. Also, the switch holder doesn't have a cable hole, so push the cables through it before soldering them! 0.2mm tolerance pre-set 'Switch_Holder' is for mounting it to the X as itself (you lose 2cm of your bed) use 'X200' to hit the switch 'Switch Holder X' is for mounting over the X axis-tensioner, adjust the X end code as needed (I think it needs to be X220 or something) 'Switch Holder X V3' is for mounting with an X belt tensioner (https://www.thingiverse.com/thing:2986144) offset is 'X235' so only 1mm of the printing area is lost [BEST SOLUTION] Needed: - 2x M3 bolt and T nut - Switch "8553vb" from "Arcolectric" https://produktinfo.conrad.com/datenblaetter/700000-724999/700088-da-01-en-Wippenschalter_gruen_beleuchtet_bedr.pdf if you are going to print V3 then https://www.thingiverse.com/thing:2986144 Add the following line to your printer's end code: G1 X235; Automatic shut down Changelog: - Added 'Switch Holder X' to get back more bed space; X200 needs to be adjusted for this in your end code! - Added 'Switch Holder X V3' this would get almost all bed space back, but you need to print thing:2986144 too. - Added 'Finger V2' as requested, this has a bigger finger end, and should hit the switch better if you have problems. Known issues V1 LOST 35MM OF BED [Known, not going to fix] V2 LOST 15MM OF BED [Known, not going to fix] V3 LOST 1MM OF BED [Known, can't fix]