It’s simple, modular storage that is practical and really grounds 3D printing in a genuinely practical use case.
To provide anecdata on how big gridfinity has become - it’s the #1 search, every week on Thangs.com, which is the largest 3D model search index available (over 14M models, and search volume is ~ 1 search every 1-1.5 seconds on Thangs). (1)
Gridfinity is literally more popular than Christmas in this community. And it’s been the top search term for a long time. (2)
There are entire subreddits dedicated to it. (3)
Zack, the guy who started it, is a genuine treasure of a human as well. Check out his YouTube channel (4), he recently built a Google Glass like device - and then shared all the designs, openly.
Disclaimer: CTO, CPO, co-founder at Thangs.com - total 3D design and 3D printing zealot
(1) https://twitter.com/Thangs3DSearch/status/160156271186268160...
(2) https://docs.google.com/presentation/d/1hv4FBexbf6isW57j063H...