Compact spool holder with beared unwinding roll

Spool holder which runs the the spool on a roll with two 608zz bearings. This ensures that the spool can be unwinded smoothly.

The spool holder can take filament spools with a depth of up to ~90mm (should be enough for all filament rolls with up to 1KG weight).

Dimensions
164mm x 164mm, height ~125mm

BOM

Mandatory aluminium rods with 8mm diameter:

Overall ~900mm are needed:

• 4x 112mm
• 1x 116mm (to mount spool roll)
• 2x 133mm (bottom front/back)
• For the "middle stabilizer" 1x 81mm (you can mount up to two, one on each side)

Other parts:

• 2x 608zz bearing
• 12x M3 5mm screw
• 4x M3 5mm screw for each "middle stabilizer"
• PETG filament (~160gr)
• Some flexible filament for rubber pads (~20gr)

Needed tools:

• M3 hex tool
• 8mm drill to rework the rod-holes if needed

Print instructions

Print Settings

Infill: 20%
Support: no
Perimeters: 4
Extrusion width: 0.45
Layer height: 0.2, 1mm top/bottom thickness
Filament: PETG, ASA, ABS

Amount of used PETG filament: ~160gr

For the rubber feed I used some random TPU I had lying around.

Post-Printing

Rework holes for 8mm rods with a 8mm drill
Depending on your printers extrusion you will have to rework the 8mm holes in all parts with a 8mm drill to be able to put the rods inside. Do not make the holes too wide, the rods should fit snugly.

Rework screw holes on part "SpoolCaseMount"
To make the part SpoolCaseMount easier to print, I have closed the two M3 holes so that the printer can bridge the whole area. Those bridged layers are needed to support the following layers. This support layer is supposed to be one layer thick, so just open the two holes with a sharp screwdriver.

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By the way: This model is compatible to the PTFE spool holder of my 2020 v-slot extrusion spool holder.