PLA Filament 1,75mm 10 farben 3D Kunststoff Filament für Makerbot 3D druck 10 mt/rolle 100 meter Kreative geschenke für kinder DIY|filament 1.75mm|plastic filamentpla filament - AliExpress
3D Print Your Own Mechanical Filament Meter - Hackster.io
Black MH Build Series PLA Filament - 1.75mm (1kg) | MatterHackers
The Filamentmeter: For When You Absolutely Want To Count Every Meter Used | Hackaday