An adjustable filament spool for samples or remnants. Collapse it fully for loading and adjust the arms and forks as needed depending on your sample or remnant diameter.

The spool inner diameter is 44mm and is more than enough to fit the stock spool holder on an Ender 3. At full extension, it will fit a sample spool of ~ 65mm inner diameter.

When collapsed, it will fit the sample white filament shipped with the ender 3 pro.

Holes in the Arms for end and start of filament.

Print list:

3 x Arm.stl
3 x Bottom Fork stl
3 x Top Fork.stl
1 x Spool Bottom.stl
1 x Spool Top.stl

Assembly:

3 x M4/30mm Socket Head Bolts
3 x M4/40mm Socket Head Bolts
6 x M4 Nuts

The top and bottom spools will index into each other. To align, insert all three M4/40mm bolts through the Top Spool and through the Arms using this to guide the Bottom Spool into alignment.

This is a ~10 hour print with tight tolerances. Makes sure your printer is calibrated for best results. Calibrate for e/x/y/z steps and flow for best results. Google how to do this for your printer.

Designed in Fusion 360 and sliced with Cura.

.20 resolution
15% infill
No Supports
Hardware required

Creality

Ender 3 Pro

No

No

.20

15% or higher