alt Hacker NewsIIUC this is also true of most 3D-print materials. You should not be using Gridfinity to store food! This is also why you usually shouldn't 3D print a dildo.
This would be true even if the materials were food safe to be honest, I don't see how you can keep something like this clean.
It's for storing stuff like capacitors and screws and electrical tape.
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Im not sure how food safe it is yet, but there is PHA which promises more compostability into the soil.
https://reddit.com/r/3dprinting_pha is a start.
I think the hygiene issue is somewhat exaggerated. Early printing often didn't prioritize properly dried filament so the output often bubbled and had many pockmarks and imperfections where bacteria could grow. If you look at modern prints they are quite smooth and consistent.
Even so, if you want to be perfectly safe then apply a coat of polyurethane varnish and let it fully cure. That will seal any holes or voids where bacteria might grow, insulated from cleaning solutions.
context: 3D-print material like PLA is food safe, but due to the many edges and lines between the print layers it is basically impossible to clean to a food safe degree.