DIY Chocolate Molds - Revisited Topic I think
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Geek Gear - Cool Tools (Read-Only)
Well, the FDA came back with an answer. The first answer was kinda bunk, gave me an application for a new Contact Surface.
However, I asked them more directly and got a response back. Essentially if the printer itself and the materials can be safe, it is ok with the FDA. The onus is on the manufacturer (you in this case) to follow FDA guidelines for food safety.
PETG is a filament that is now regularly available. I would imagine research would be needed to find out if the colors are food safe, but clear/natural PETG would be recommended. PETG can be sterilized by going through the dishwasher and withstands high heat.
Polycarbonate is another filament that is considered to be an exotic filament at the moment. It's available but more expensive than PETG and it's only available from some companies. PC can be sterilized through dishwashing procedures and it can withstand high heat.
Printer extruders and hot ends can be made out of stainless steel or printed via PC or PETG for food contact safety.
This all being said, 3d printers arent exactly user friendly and you would still need to learn CAD or 3d modeling of some sort to do this completely DIY. Luckily for me, that's my background. I was just wondering if there are others attempting this and how it's working out for you. I just ordered my first 3d printer and expect to have a foodsafe printer capable of printing in Polycarbonate sometime over the summer.
I'm kind of excited that these breakthroughs have been made and that it seems that a reasonable cost for custom chocolate molds. The designs also dont have to be awkward to handle because there's no need for injection molding support and structure in the mold. This can make the mold smaller or be able to support more cavities than is usually available in a given commercial mold.