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IIUC 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. T
by bjackman 1y ago
IIUC 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.
- lrvick 1y agoBut, importantly, you can 3D print a dildo mold.
- bobsmooth 1y agoThe layer lines will show up in the silicone.
- cassianoleal 1y agoThat’s called ribbing and it’s a feature.
- peterpost2 1y agoYou could lightly sand it before using it as mold, would lessen that issue.
- lrvick 1y agoOr a little bit of alcohol vapor smoothing if you print the mold with ASA
- a_bored_husky 1y agoBeeswax https://www.billieruben.info/post/3d-printing-sex-toys-a-quick-easy-and-safe-method https://www.billieruben.info/post/3d-printing-sex-toys-a-qui... https://news.ycombinator.com/item?id=28819927 https://news.ycombinator.com/item?id=28819927
- i5heu 1y agocontext: 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.
- idiotsecant 1y agoYou can make it reasonably food safe with an acetone mist bath, though. It melts all the irregularities into a smooth surface.
- phoronixrly 1y agoWhile theoretically you can get certified food-safe blend of PLA, the rest of the extrusion path must also be food-safe... I personally am not fond of eating hot degraded PTFE... Or the trace remains of charred ASA/ABS I printed last week through the same nozzle... Or in fact any of the various coatings of the heated bed or leftover trace amounts of previous prints... It's just a black hole that I choose not to get into by not printing stuff that's expected to be in contact with food.
- rtkwe 1y agoThe main solution I've heard is to just encapsulate the whole thing in foodsafe epoxy. Then it doesn't matter as much what the inner material in so long as you monitor for damage.
- idiotsecant 1y agoThere's food safe epoxy? TIL
- rtkwe 1y agoYeah there are a couple that claim to be like this [0] one, and there are FDA standards to follow for that claim. I wouldn't use one on a cutting board or anything that gets scraped or cut on and you need to let it cure waaaay longer than normal but yeah there are options out there. [0] https://www.artresin.com/blogs/artresin/food-safe-epoxy-a-guide-for-fda-compliant-epoxy https://www.artresin.com/blogs/artresin/food-safe-epoxy-a-gu...
- naasking 1y agoI 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.
- seltzered_ 1y agoIm 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 https://reddit.com/r/3dprinting_pha is a start.
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