Post B0Jv2WeTE0E3PPrXSi by StompyRobot@mastodon.gamedev.place
(DIR) More posts by StompyRobot@mastodon.gamedev.place
(DIR) Post #B0JkCR5dewNBYk5qYy by foone@digipres.club
2025-11-16T22:49:41Z
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looking at thingiverse, people sure are eager to 3d print things that shouldn't be 3d printed(a mouth guard?!)
(DIR) Post #B0Jkml44s3Dtw2gOmm by foone@digipres.club
2025-11-16T22:56:20Z
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FDM printing with PLA has the problems that it's inherently not a good material to have near your body (it will partially melt and leak nasty chemicals at you) but also it's completely un-sterilizable. There's all kinda of little tiny voids that will fill up with bacteria.also, your hot end might be leaving lead in the print.
(DIR) Post #B0JkpzAMtl5kXTAFMG by munin@infosec.exchange
2025-11-16T22:56:17Z
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@foone "do not 3d print items for inside the human body; items for inside the human body require special care" is one of those things that probably needs to be added to school curricula nowadays.
(DIR) Post #B0Jkq0F0tyOxsALTEm by foone@digipres.club
2025-11-16T22:56:49Z
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@munin inside or even adjacent to the human body, tbh
(DIR) Post #B0JlBIVeAy1mc0HOQS by foone@digipres.club
2025-11-16T23:00:45Z
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so my understanding is that if you want to make something human-safe with 3d printing, you either need to fully coat it (for things like jewelry) or you need to print a mold and cast some body-safe silicone instead
(DIR) Post #B0JlQvCKcDL8whh9Lk by foone@digipres.club
2025-11-16T23:03:35Z
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so you probably REALLY SHOULD NOT try to print something that goes in your body with it.
(DIR) Post #B0JlUPQIh8rDYZtM6y by foone@digipres.club
2025-11-16T23:04:12Z
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@dysfun my understanding is that while other types of filament are better, they still can run into the lead issue with the hot ends
(DIR) Post #B0JlXSMGEuvVWmSIYS by foone@digipres.club
2025-11-16T23:04:45Z
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DO NOT PUT THE 3D PRINT IN YOUR MOUTH
(DIR) Post #B0Jldd8h4Ie6hc3N56 by foone@digipres.club
2025-11-16T23:05:54Z
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@spycrab I know some people do complicated mold things where, like, they make a mold out of the 3d print, then make a second mold out of that, to avoid these problems. that way you can sand down the pre-mold to make it safer
(DIR) Post #B0Jlhje0pAcW2IeyA4 by foone@digipres.club
2025-11-16T23:06:33Z
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@dysfun I thought the brass nozzles was where the lead was coming from
(DIR) Post #B0JllQCH4TV4saRYDg by foone@digipres.club
2025-11-16T23:07:19Z
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@puppygirlhornypost2 look I've had a porn star ask me about 3d printing sex toys, I'm not being naive here. I still think the worst place you could put a 3D print is in your mouth
(DIR) Post #B0JlqNIFIJgtK0b9eK by foone@digipres.club
2025-11-16T23:08:09Z
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@dysfun apparently brass often has lead and arsenic impurities in it, to make it easier to machine
(DIR) Post #B0Jlvr7LpszxGg7Fs8 by foone@digipres.club
2025-11-16T23:09:11Z
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@puppygirlhornypost2 mold them and use silicone! I don't care if you want to put weird things in your nose and ears, I just don't want you to get poisoned by it
(DIR) Post #B0JmKqaIxFXyr2ZkYa by foone@digipres.club
2025-11-16T23:13:42Z
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@puppygirlhornypost2 yeah when I was looking into making sex toys with it, the advice was to make a print, sandpaper it or use a plastic dissolving spray, then make a mold out of that, then use that mold to cast silicone
(DIR) Post #B0JmQUBb91kR7lhxdg by foone@digipres.club
2025-11-16T23:14:41Z
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@pixx yeah my understanding is that the plasticizers in PLA are the problem, and other filament types use the same or similar plasticizers for the most part
(DIR) Post #B0JtuTQpDHmB9R4ojY by developing_agent@mastodon.social
2025-11-17T00:32:34Z
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@foone Lead?
(DIR) Post #B0JtuUWt8EDiYWvAp6 by foone@digipres.club
2025-11-17T00:38:29Z
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@developing_agent the bronze nozzles have lead in them to make them easier to machine
(DIR) Post #B0JuwD3l9fXEuKgCSO by raptor85@mastodon.gamedev.place
2025-11-17T00:45:19Z
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@foone @pixx PET, PC, and somewhat ABS (almost any printer can do PET, higher end ones can do PC and ABS) don't have that issue, they're (chemically) food safe though they still have the issue with voids (though you can use food grade sealants and ABS can be sealed/smoothed with acetone) so for most things they're not useful beyond a single use, but the prints are still useful as a model to make a silicon mold
(DIR) Post #B0JuwDztfW2Vodsd4i by foone@digipres.club
2025-11-17T00:50:02Z
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@raptor85 @pixx I should look into those. I've got some 3d printed stuff that I'd be holding from time to time, and I'd rather not be worrying about PLA poisoning me the whole time. (I don't have much experience printing non-PLA, so I've stuck to it for most stuff)
(DIR) Post #B0Jv2WeTE0E3PPrXSi by StompyRobot@mastodon.gamedev.place
2025-11-17T00:49:43Z
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@foone SLA print UV cured resin though?(As long as it's not too brittle)
(DIR) Post #B0Jv2Y3fzlyxlsfBOC by foone@digipres.club
2025-11-17T00:51:13Z
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@StompyRobot I don't do any SLA, but my understanding is that that CAN be made food-safe, but it's not inherently food-safe. ie, some resins are safe and some aren't.
(DIR) Post #B0JvNmYLIeSMo58FtY by StompyRobot@mastodon.gamedev.place
2025-11-17T00:53:44Z
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@foone yup. There's also ceramic deposit print mechanisms that you bake (think porcelain) and can glaze, but obviously too brittle for a mouth guard.
(DIR) Post #B0JvNnmCkb8gbMcq8m by foone@digipres.club
2025-11-17T00:55:04Z
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@StompyRobot oh that's neat. I'll have to look into that, my mom's a potter and I'm sure she'd love to hear about that.
(DIR) Post #B0JvSnLJn3pShkQkGu by foone@digipres.club
2025-11-17T00:55:58Z
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@raptor85 @pixx ahh:> Ideal: PLA, PETG, TPU, PVA, PET, ABS, ASACapable: PA, PCSo yeah, sounds like I should have no problem there.
(DIR) Post #B0JvlSVFUqF3ZayVsm by raptor85@mastodon.gamedev.place
2025-11-17T00:56:21Z
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@foone @pixx some people even recycle PET bottles into filament to re-use! it's a bit harder to print successfully than PLA (if you have an older printer especially, most newer ones tune themselves automatically). Some of the other materials give considerably more...toxic fumes than PLA when printing as well so make sure you vent, especially with ABS. (most printers "made" for materials like ABS are enclosed and have carbon air filters)
(DIR) Post #B0JvlTOYBETgL6qg52 by foone@digipres.club
2025-11-17T00:59:18Z
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@raptor85 @pixx yeah, the printer we got recently is one of those, it's enclosed and filtered.
(DIR) Post #B0Jw1OJipM4dDxBG5I by sabik@rants.au
2025-11-17T01:02:09Z
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@foone I think there are also specialised 3d printers that do human-safe materials?
(DIR) Post #B0JxeB38BoqhK6TkIq by raptor85@mastodon.gamedev.place
2025-11-17T01:04:56Z
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@foone @pixx bambu P1S?
(DIR) Post #B0JxeCgA8BfGNRkQmO by foone@digipres.club
2025-11-17T01:20:25Z
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@raptor85 @pixx yup!
(DIR) Post #B0K2J7u1C7L5FizvpA by foone@digipres.club
2025-11-17T02:12:37Z
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@punissuer @puppygirlhornypost2 personally I have a policy against asking a girl what she does with her toes
(DIR) Post #B0K2SXgOiHRjob7Ifo by foone@digipres.club
2025-11-17T02:14:22Z
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@puppygirlhornypost2 @punissuer gasp scandalous
(DIR) Post #B0K4KwjRtf6P5z38ts by emag@strangeplace.me
2025-11-17T02:35:21Z
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@foone but they're so tasty, and I can use my third arm to remove them while still playing games! /s
(DIR) Post #B0KQthozWXpByhccD2 by f4grx@chaos.social
2025-11-17T06:48:01Z
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@foone or in any other human opening for that matter.
(DIR) Post #B0KRShWacSTtC1hYnY by f4grx@chaos.social
2025-11-17T06:54:29Z
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@foone @puppygirlhornypost2 you cant dissolve pla with sane chemicals. Only abs will buff out with acetone.
(DIR) Post #B0KTiBIQPZdnmPaMMa by snowden@chaos.social
2025-11-17T07:19:39Z
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@foone my partner has a 3D printed mouth guard! I was pleasantly surprised when I figured out it was - bear in mind this was provided to him by an actual dentist and it looks to be an SLA print rather than FDM
(DIR) Post #B0Kb7TDjbbpWI2OhVo by h3@chaos.social
2025-11-17T08:42:37Z
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@foone@puppygirlhornypost2I've seen people fill the mold with beeswax, drain it, and have a smooth wax surface on the inside. Sounds like less effort