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PETG Dishwasher safe?  

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PETG Dishwasher safe?

Is the Prusa PETG dishwasher safe? Also food safe?

Posted : 09/08/2021 3:13 pm
Illustrious Member
OK for dishwasher (probably) but not for food

The glass transition temp for PETG is typically around 85C/185F. A typical dishwasher cycles at around 60C/140F. So a PETG print will "probably" survive a wash cycle. Food safe is a complicated topic. PETG with no additives is generally considered food-safe, but most filaments have colors and other additives which are not. It really doesn't matter because FFF printing is inherently not food-safe. Any print will have grooves and crevices that can harbor bacteria and get gross rather quickly. You can coat PETG or other filament prints to make them safer. Food-safe also implies printing on an approved printer (e.g., no brass nozzles which typically contain lead).

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He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Posted : 09/08/2021 3:25 pm
Reputable Member
RE: PETG Dishwasher safe?


Posted by: @mdavinci

Also food safe?

Posted : 09/08/2021 4:38 pm
food safe

Not all PETG is food-safe.  I general, I would not use 3d printing for contact with food.  

I do make items for the dishwasher and have used PETG and ASA.  Both survive the dishwasher.  The times I have made ate soda stream lid holders but none of the items make direct contact with food.  

Chuck H
3D Printer Review Blog

Posted : 10/08/2021 8:54 am