Sandworm 3D printer - Filament and Spool:

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• Main

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• Drive Mount

• XY Axis

• Z Axis

• Chassis Top

• Chassis Middle

• Chassis Bottom

• Electronics

• Extruder

• Filament and Spool

• Levelup Addons

• PrusaSlicer

• Tools

• Bill of materials (BOM)

• Gallery

Non-printed parts used in this section:
- 4x M5 Half rounded head 20mm screws
- 1x M5 Half rounded head 30mm screw (into DIN clamp, screw with M5 nut)

- M5 CS 16mm and M5 nuts (For the side stop of the Spool holder)
- 6x M3 CS screws 20 mm long and M3 nuts + heat-set nuts (For Filament Sensor holder)

Note: There is a holder for the Bigtreetech Smart Filament Sensor (SFS) V2.0 available in the Levelup Addons section, if you plan to go with the BTT SFS V2.0 sensor, check the Levelup Addons section first.
 

Assembling Filament_Runout_Switch_Holder.stl and Spool_Holder.stl:


1. Preparing the Runout Switch and Spool holders:
Insert 2x heat-set nuts and two M3 nuts into the case of runout switch holder and screw the Filament Runout Switch and BMG Push Fit Grommet onto it with 4x M3 CS 20 mm screws:

 
 
Insert 2x M3 heat-set nuts into the holder of runout switch case: 

 
 
Insert an M5 nut into the filament spool holder and screw on the side stop cover using an M5 CS 16 mm screw:

 
2. Mounting the holders to the printer frame:
Remove the five existing M5 CS screws from the chassis and aluminum frame:

 
 
Attach the holders and screw them in with new M5 rounded head 20mm screws:
(don't forget that a longer M5 CS screw with 30 mm is used through the plywood at the spool holder and is secured on the other side with an M5 nut)

 
 
Mount the runout switch case itself in place using two M3 CS 20mm screws:

Filament Runout Switch Wiring:
The cable for the Filament sensor can be routed through Corner_Back_R.stl (it has a cable passage in one of its reinforcement ribs):

... or drill a hole for the cable in the side plywood under the Filament holder.

Roadmap:
Drive Mount →  Chassis Bottom →  Chassis Top →  Chassis Middle →  XY Axis →  Z Axis →  Electronics →  Extruder →  Filament and Spool  →  Levelup Addons →  PrusaSlicer →  GitHub

The next step is tuning setup: Levelup Addons