Craftisian

re: Most Tung oil directions get this wrong

swirt
Swirt, pre-polymerized tung oil is pure tung oil, just like boiled linseed oil is pure flax seed oil. 

That's sort of right but not quite.  BLO is not pure flax seed oil.  It is flax seed oil and metallic driers added. Pure flax seed oil is edible, BLO... Not so much.