ERCF Smart Filament Motion Sensor Slim Mount

I wanted to use the excellent ERCF Smart Filament Motion Sensor, but I wanted a lower profile, when I mount it to the 2020 extrusion on the back of my Voron 2.4. Therefore I moved the mounting flanges and made the mounting screws M3.

I also created a cover for the TCRT5000, because I didn't want it open where I could touch pins.

And I didn't like that the screw for the bearing went into plastic (I had some split layer lines because of that), so I added a threaded insert instead.

Please mostly refer to the original model for instructions.

Differences in the BOM:

• M3x20 SHCS for mounting the bearing

• M3x8 BHCS for mounting the cover and the TCRT5000

• 2 M3x8 BHCS for mounting the sensor to the 2020 extrusion

The CAD file also has a mirrored version, if you need it.