You also have to deal with the FDM void issue. Look closely between the layers: they cannot be there if you are to consider your product to be food-grade. Fortu

You also have to deal with the FDM void issue. Look closely between the layers: they cannot be there if you are to consider your product to be food-grade. Fortuately there are ways to remediate this. ABS is weak to acetone, so you can make an acetone vapor bath. Look this up how to do it. PLA is the nasty one, as the solvent that dissolves it is methyl-ethyl ketone (MEK). Nastiest stuff I've worked with outside a fume hood. Use a respirator, gloves, and trash clothing. The stuff dissolves all sorts of polymers. It's also used as a polymer glue. But tl;dr: Don't use if if you don't have to.