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replied 5 years ago
I know you can Acetone smooth ABS, but I wasn’t sure if ABS was safe to use with food. I also know you coat prints in epoxy, but didn’t know if that was a safe option either.
replied 5 years ago
ABS is usually safe with food, HOWEVER it is never advisable to use 3d printed parts for foodware. The issue is twofold: the material you are printing may be food safe, but traces of other materials you used before or the materials it gets in touch with (e.g. metals in the brass alloy of the nozzle). The other side is the nooks and crannies of the layers prevent proper cleaning and even if acetone smoothing, it probably will keep some porosity.
Coating with a food safe epoxy or coating is practically the only good way to get it right.