[Daren]

I would have thought finishing them with a coat of something might be advisable, as the way they are printed (layer by layer) leaves them slightly porous, and prone to harbouring bacteria. There are food safe sealants people use with 3D printing, but I’m not sure who makes them.

I’m planning to make my next mouthpiece with 3D printed ceramic. Its glazed in the traditional way after printing, so its considered just as safe as ceramic plates and cups etc.