In this video I intorduce a filament grading rubric. I started this process before I found out that Tom is also grading filament, and he's naturally going about it very differently than I am. Here's the rubric with perfect score:
Recycled PET and Ninjaflex that I reviewed earlier.
However, what surprised me is how high the recycled PET scored. 86% percent, higher than ABS and PLA, but without as many fudge points. And it's true, except for being able to smooth it like you can with ABS, PET is fantastic stuff. I find myself using it for thing that need to endure and be strong, but don't need to be finished like ABS, because it's just so much easier to print with. Yeah, it's stringy, but it's not real bad and easily fixed.
I'm experimenting with another roll of filament for next week's video so stay tuned.