Opinion's on "Food Safe"

[3dkarma]

well firstly: Every thing you use has bacteria on. It's all scratched to one degree or another after first use. You might not see the scratches without a microscope - but they're there.
So the whole crevice argument is bogus.

The crevice argument applies as much to the cavities within your print as the surface of the print itself. While it might be possible to wash off the surface, washing baterial growth out of the hollows within the print will be impossible. Printing at 100% infill or at least with enough perimeters to ensure the print is watertight will help, but you can't guarantee it.

secondly 'foodsafe' actually refers more to fumes given off when the material is burnt, than it does to eating off the material itself.

Eating plastic - while not a great idea. Is safe. We can't break down abs or pla or pet or ninjaflex, etc in our stomachs - so it's all non-toxic in that respect.

Food safe does not refer more to fumes given off with the material is burnt. Small amounts of the material can break off and be digested during the course of normal use. The filament you use, even if it is biodegradable PLA, can have additives (colouring, plasticisers, etc.) that are not food safe and are harmful if consumed. Likewise, the printing process can introduce contaminants to the finished product that render it not food safe.

Edit: formatting.