Ender3 Neo - Filament Runout Relocator for Direct Drive setup

Relocates the runout sensor on Neo series printers from the X gantry to the top aluminium extrusion. V2 has 2 T-slots.
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updated August 24, 2023

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So I've been using the new Sprite Direct Drive SE extruder for the Neo series.

 

I love it, but I needed to relocate the filament runout sensor.  I've used the T-Slots for the top aluminium extrusion to mount it.  Simply slide it in and place it where you want.

 

You will have to lengthen the wires for the connector, as they don't reach far enough.  I opted not to mount the sensor to the print-head for 2 reasons

 

  1. I didn't want the additional weight - I observed increased smearing of fine details when I ran a 100g heavier DIY direct drive setup and I refuse to add that weight back
     
  2. Mounting the sensor in this location serves the additional benefit of stopping the motion of the printhead from wobbling your spool around during the print
     

V1 uses a single T-slot and is more low profile, V2 uses two T-slots and is much more rigid.

 

For both, you will need the appropriate hardware.  I've not mounted mine yet, I need to go to get some screws, but I will report back once I've figured out the correct length.

 

For V2, the top 2 screw-holes will have to be drilled out before screwing them in, to prevent cracking.  - I modify my models in PrusaSlicer and it doesn't export any negative volumes created so any holes I create don't save to the STL so  I can't do anything here I'm afraid.

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