I can't see how Tung Oil could be on the bad list as it's made from pure natural Tung trees.

My understanding is that all coatings Synthetic are frowned upon. Although I always thought Nitrocellulose was made from pure natural cellulose(cotton) soaked in pure natural Nitric Acid(concentrated rain water).

If there is any bitch about Tung Oil I would expect it would be when they add a bit of Polyurethane to make it glossy.

All hail the natural tung oil...

PK