PET Bottle Filament Spool Spool

Not limited to spooling PET-1 style filament, can be used for other filament you have welded togther into a continuous spool.

When welding lengths of DIY PET filament from recycled bottles you cannot bend too much near the joins. To overcome this limitation the solution is to wind your homemade filament onto a spool with a larger inner diameter to reduce the stress on these areas avoiding breaks in the roll.

Can be printed in any material, however reccomend ABS/ASA for easier glueing with acetone or similar based glue. However canbe printed in PLA and bonded with 3D gloop or CA Glue (Super Glue) if you wish

You will need a large print bed in order to print this. I had to use a 350mm build plate in order to fit the rims on the bed.

Source .step and .f3d files are included should you wish to modify or split for printing on a smaller bed.

Print 2 copies of the rim and 1 copy of the core.

The rims have a slight lip on the inner hole in order to help align the core.

Glue togther where the rimmand core meet.

Reccomend importing into slicer from the .step file rather than the .stl files, this is to allow the slicer to easily maintin curves being a round object.

Reccomended print settings

4 walls

30-40% infill

5 top and bottom layers

Based on the design for the function.3d cardboard spool template, dimensions used.

Instead this design is to be 3d printed