How precise is your filament really?

JLCPCB keeps producing through the CNY holiday! Use "JLCPCBcom" for $2 off on https://jlcpcb.com What can we really verify about the 3D printer filament we use? No much, really. Maybe what material it is, but especially things like extrusion precision across the entire spool are not something that you could just easily measure yourself. But I wanted to know - how good have filament manufacturers become when it comes to producing round, consistent filament, and is there really a difference between a "+-50um" filament and a "+-20um" one? So I built a custom filament diameter measurement rig, based on cheap, custom sensors units I designed and went to town measuring a bunch of filament. Lots to learn! I'll be releasing the sensor design after one more round of revisions. They are decent as-is, but can be built to be more reliable and repeatable with a few small changes. Stay tuned! Filaments tested DAS FILAMENT PLA https://www.dasfilament.de/filament-spulen/ Prusament PETG http://go.toms3d.org/Prusament Creality CR-PLA http://go.toms3d.org/CrealityPLA Breathe3DP PA https://www.breathe-3dp.com/nylon.html Proto-Pasta PLA http://go.toms3d.org/ProtoTom/ Product links are affiliate links - I may earn a commission on qualifying purchases (at no extra cost to you) 🩵 Support the channel by shopping through my affiliate links Buy Bambu Lab printers and printer accessories https://go.toms3d.org/Bambu Buy Prusa Research printers and printer accessories https://go.toms3d.org/prusa/ Tools I use: 🔩 Onshape Cloud-native CAD (free for Makers) https://onshape.pro/ThomasSanladerer 🎵 Epidemic Sound for video music (30-day trial) https://share.epidemicsound.com/MadeWithLayers 📷 Camera gear and recording equipment (not free, unfortunately) https://toms3d.org/my-gear 🎧 Check out the Meltzone Podcast (with CNC Kitchen)! https://www.youtube.com/channel/UCzUgJrG-w_KQexroYkJR9XQ 👐 Enjoying the videos? Support my work on Patreon! https://www.patreon.com/toms3dp