Seal a print?

[3DPiper]

Thanks for the info guys!

Making a mold would be very difficult. This specialty mouthpiece has several air passages instead of one (think: cooling passages for a car engine). I would have to re-design it to anticipate each air passage being cut in half for a mold. Not impossible, but would have to start all over.

If I was able to actually make a mold, the material I would like to cast would need to be very hard and dense, like delrin/acetone. Is delrin castable? Or is there something similar?

I'm hoping to do everything in-house as much as possible.

Finding non-toxic resin would be ideal, but so far I have no found any. Dipping just the part that will be in your mouth in some food-safe non-toxic sealer would also work if it is hard. Marm is correct: teeth would quickly tear through the silicone coating. Hmm.. Maybe heat-shrink?