The Greener Spool - MasterSpool vs Cardboard

We evaluate some of the issues with MasterSpool refills while explaining why we chose cardboard as the material of choice for our 3D printing filament.

recycled - Filamentive

The Greener Filament Spool – MasterSpool vs Cardboard

Reprap development and further adventures in DIY 3D printing

Announcing Prusament Refill, Matte PETG, Flexible and Biobased

Spool saver - emergency solution for broken cardboard spools! by

The Greener Spool - MasterSpool vs Cardboard

SUNLU PLA+ Filament MasterSpool, PLA Plus 3D Printer

I think this kind of spools should be more common : r/3Dprinting

MasterSpoolSpool!

Polymaker Shifts To Recyclable Cardboard Spools « Fabbaloo

Filamentive

Reprap development and further adventures in DIY 3D printing: DIY

Creating MasterSpool from an old filament spool

Look ma, no spool!

Paramount 3D PLA 1.75mm 1kg Filament (Master Spool) (Military Green (MS_OGRL60037764C), 1kg [1 ROLL])

SUNLU PLA+ Filament MasterSpool, PLA Plus 3D Printer