Prusament NFC Filament Indicator PLA PETG TPU meters grams

A filament indicator for Prusament NFC spools . Update 2026-01-27: Removed 'feet' versions, added TPU. Update 2026-01-14: Uploaded V2. On V1 the second and third number of grams were swapped. It fits on 2 places on each sides of the spool. You need to find one of the hexagon holes closest to the core that where you can see filament, they have a little slope connected to it. It snaps in the hexagons around it. I left some space on the outside to make it not interfere when using a filament roller. Variants available for PLA and PETG. I have printed it with the numbers facing down. Designed in Autodesk Fusion, source file included. All text and most dimensions are parametric. I am open to suggestions for improvements. Here you can find my remix for Classic Prusament (non-NFC) Spools :