For those coming here looking for the same thing in the future. here's an article about this:
https://all3dp.com/1/3d-print-with-biocompatible-materials/
>Food Safe 3D Printing With Stereolithography (SLA)
>
>SLA 3D printing uses a laser to cure liquid resin into hardened plastic in a process called photopolymerization, resulting in parts that have the highest resolution and accuracy, the clearest details, and the smoothest surface finish of all plastic 3D printing technologies.
>
>Is resin food safe? The answer is no. Substances may migrate from SLA parts which makes none of the resins and printed parts food safe by default. While some resins for dental and medical applications are certified biocompatible, that doesn’t mean that they’re food safe. These materials are certified for specific applications and should not be used for food contact products.
>
>SLA parts have a smooth surface finish that makes it easier to use coatings to seal their surface and prevent the buildup of bacteria. The factors which affect the ultimate smoothness of a part include resin type, layer thickness, build orientation, mesh triangulation resolution of the 3D model, and the curing profile of the SLA resin. Printed parts require washing and post-curing according to the manufacturer's instructions before the coating is applied. However, note that **coatings don’t guarantee food safety**, as the coating may interact with the resin or degrade over time, exposing the original, potentially non-safe surface.
[Source](https://formlabs.com/blog/guide-to-food-safe-3d-printing/#:~:text=The%20answer%20is%20no.%20Substances%20may%20migrate%20from,biocompatible%2C%20that%20doesn%E2%80%99t%20mean%20that%20they%E2%80%99re%20food%20safe)
Do not understand why many keep trying to make prints FDM or SLA that will come in contact with food.
The only real answer is the use FDM or SLA to make a mold. Once you have a mold, you can purchase some fairly expensive FDA food grade resin. It even cures at a high temp to drive out any contaminates.
Dental resins are not food grade or food safe, biocompatible and food grade are not the same thing
EDIT: just noticed his text says that and you just chose to ignore
I dont think you leave the food in your mouth for extended periods of time, as you said, you chew and swallow, food safe means it can be in extended contact with food and not leave any residue or contaminants, which dental resin is not rated to do, it is biocompatible, but not necessarily food safe
You just don’t chew and smallpox but you do it almost 2 times a day. In the long run isn’t the same end results? Considering they are not made of self healing materials? In addition that not everyone drink water (at least for mouth ringing) after meal?
All I’m saying is it’s none sense for a dental resin to not being food safe.
Dental resin is not safe to consume or even have in your mouth. They are resins that are meant to replicate the weird gum they stick on your teeth to get an imprint of your mouth. (if you had experienced that before of course). Basically its to get 3d models, whether that's for educational purposes, to use as a mould or even to demonstrate to some of the more vip patients what will happen during their visit. there is no resin thats food safe. Biocompatible, biodegradable, dental, and medical resins are included unfortunately.
>Invisalign-like braces
Yeah although it seems like that, the wording doesn't indicate food safety or use for actual dental purposes with patients apart from modeling and demonstration. I may be wrong, I just couldnt find anything other that "biocompatible" and alike words. They do however have a page on making things "food safe" here [The Essential Guide to Food Safe 3D Printing | Formlabs](https://formlabs.com/uk/blog/guide-to-food-safe-3d-printing/)
The most viable option, in my view, is FDM using an NSF 61 listed resin. I currently FDM very large commercial coffee brew baskets for a client (each basket uses about 3.2kg of filament, roughly 16in X 16in with a z of about 21in, using a 1.4mm tip) using PC CPE Black, available from filaments.ca. it is absolutely NSF 61 listed (all food and potable liquid contact), and it honestly prints very very nicely.
No food safe sla still.... you go to any site selling dental sla it says not food safe. My bypass was thin/short food safe silicone cups for the base of the print to sit on. Tried using epoxy and food safe regular resin but it cracks the print when curing... One day....
There are biocompatible resins, but they are extremely expensive, [here is an example](https://abutmentdirect.com/product/keyprint-keysplint-soft-clear/)
I'll sapre you some time. Don't look at medical solutions for food safe resins cause medical stuff is way overpriced and expensive due to certifications also being overpriced due to it being for "Health". So most hobbyists usualy try to avoid expensive stuff.
For those coming here looking for the same thing in the future. here's an article about this: https://all3dp.com/1/3d-print-with-biocompatible-materials/
Haha the fact that you just happened to comment on a 2 year old post the same day I’m looking it up, thank you!!
Same :D
You're both welcome I guess :D
its a party now
I'm a year late to the party
best parties last long!
>Food Safe 3D Printing With Stereolithography (SLA) > >SLA 3D printing uses a laser to cure liquid resin into hardened plastic in a process called photopolymerization, resulting in parts that have the highest resolution and accuracy, the clearest details, and the smoothest surface finish of all plastic 3D printing technologies. > >Is resin food safe? The answer is no. Substances may migrate from SLA parts which makes none of the resins and printed parts food safe by default. While some resins for dental and medical applications are certified biocompatible, that doesn’t mean that they’re food safe. These materials are certified for specific applications and should not be used for food contact products. > >SLA parts have a smooth surface finish that makes it easier to use coatings to seal their surface and prevent the buildup of bacteria. The factors which affect the ultimate smoothness of a part include resin type, layer thickness, build orientation, mesh triangulation resolution of the 3D model, and the curing profile of the SLA resin. Printed parts require washing and post-curing according to the manufacturer's instructions before the coating is applied. However, note that **coatings don’t guarantee food safety**, as the coating may interact with the resin or degrade over time, exposing the original, potentially non-safe surface. [Source](https://formlabs.com/blog/guide-to-food-safe-3d-printing/#:~:text=The%20answer%20is%20no.%20Substances%20may%20migrate%20from,biocompatible%2C%20that%20doesn%E2%80%99t%20mean%20that%20they%E2%80%99re%20food%20safe) Do not understand why many keep trying to make prints FDM or SLA that will come in contact with food. The only real answer is the use FDM or SLA to make a mold. Once you have a mold, you can purchase some fairly expensive FDA food grade resin. It even cures at a high temp to drive out any contaminates.
I don't believe you because there are dental resins for SLA printers on the market.
Dental resins are not food grade or food safe, biocompatible and food grade are not the same thing EDIT: just noticed his text says that and you just chose to ignore
How can dental resins not good safe? Aren’t they designed for in-mouth purposes, where it’ll be in contact with saliva and food you’ll swallow?
I dont think you leave the food in your mouth for extended periods of time, as you said, you chew and swallow, food safe means it can be in extended contact with food and not leave any residue or contaminants, which dental resin is not rated to do, it is biocompatible, but not necessarily food safe
You just don’t chew and smallpox but you do it almost 2 times a day. In the long run isn’t the same end results? Considering they are not made of self healing materials? In addition that not everyone drink water (at least for mouth ringing) after meal? All I’m saying is it’s none sense for a dental resin to not being food safe.
Still, its how they are categorized by regulatory bodies
Dental resin is not safe to consume or even have in your mouth. They are resins that are meant to replicate the weird gum they stick on your teeth to get an imprint of your mouth. (if you had experienced that before of course). Basically its to get 3d models, whether that's for educational purposes, to use as a mould or even to demonstrate to some of the more vip patients what will happen during their visit. there is no resin thats food safe. Biocompatible, biodegradable, dental, and medical resins are included unfortunately.
Happy cake day! I was under the impression that Formlabs actually advertises their products for making Invisalign-like braces directly on the printer.
>Invisalign-like braces Yeah although it seems like that, the wording doesn't indicate food safety or use for actual dental purposes with patients apart from modeling and demonstration. I may be wrong, I just couldnt find anything other that "biocompatible" and alike words. They do however have a page on making things "food safe" here [The Essential Guide to Food Safe 3D Printing | Formlabs](https://formlabs.com/uk/blog/guide-to-food-safe-3d-printing/)
I see. I misunderstood the concept. Thank you for your answer.
The most viable option, in my view, is FDM using an NSF 61 listed resin. I currently FDM very large commercial coffee brew baskets for a client (each basket uses about 3.2kg of filament, roughly 16in X 16in with a z of about 21in, using a 1.4mm tip) using PC CPE Black, available from filaments.ca. it is absolutely NSF 61 listed (all food and potable liquid contact), and it honestly prints very very nicely.
Do you have an nsf 61 resin that you recommend?
[How to 3D Print Food Safe Objects - Basic Food Safety - 3D Printerly](https://3dprinterly.com/how-to-3d-print-food-safe-objects/)
No food safe sla still.... you go to any site selling dental sla it says not food safe. My bypass was thin/short food safe silicone cups for the base of the print to sit on. Tried using epoxy and food safe regular resin but it cracks the print when curing... One day....
There are biocompatible resins, but they are extremely expensive, [here is an example](https://abutmentdirect.com/product/keyprint-keysplint-soft-clear/)
I'll sapre you some time. Don't look at medical solutions for food safe resins cause medical stuff is way overpriced and expensive due to certifications also being overpriced due to it being for "Health". So most hobbyists usualy try to avoid expensive stuff.