Prusa XL magnetic side filament sensor with reduced force with PC4-M10 Passthrough Fittings

This is a remix of the side filament sensor of the Prusa XL.

Especially when using flexible or soft filaments, it is almost impossible to get them through the side filament sensor. The user tg73 has found a magnetic solution for this. This is where the springs are removed. To do this, two 3x3mm magnets are inserted in a row into each hole. Use magnets with N52 strength. The polarity is very important here. This should be checked with the metal balls beforehand!

Here you find more information and how to remove the springs: https://www.printables.com/de/model/700838-xl-side-filament-sensor-with-reduced-force-magneti

Print settings:

The 3MF-Files are already preconfigured for the Prusa XL. If you want to do it without colored numbers, you can just delete the numbers. So the numbers are embossed. 

• 3-4 perimeters

• 0.2 layer high

• PETG

• No supports

• Pause the print at 8mm layer high to insert the three magnet stacks (6mm). POLARITY IS IMPORTANT! If you do it wrong it will not work!

How to check the right polarity of the magnets:

1. Stack the magnets together (3x2). And stack it on the Metallballs. Feel the side with the bigger attraction!

       2. Now just stack it to the right position to the print bed.

       3. Remove the sensor part. Now you can use a tweezer to pit it in the holes at 8mm layer hight.

Material list (Affiliate Links):

Fittings: https://s.click.aliexpress.com/e/_DE6V8Ur

Clips: https://s.click.aliexpress.com/e/_DE2XwQb

Magnets: https://s.click.aliexpress.com/e/_c42jI7rf

Magnets from germany: https://www.magnethandel.de/neodym-magnete-3-3-mm-n52

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PTFE Tube Funnel: https://www.printables.com/de/model/634487-prusa-xl-series-filament-insertion-guide

This is a modified version of the official XL Filament Sensor blocks that were reworked to accept a PC4-M10 fitting & added holes to receive magnets. The magnets are inserted during printing. So you can not see the magnets from the outside. And the magnets cant fall out.