I'm normally a lurker but after reading a thread on Woodweb http://www.woodweb.com/knowledge_bas..._Coatings.html several questions come to mind. If Tung Oil (the real stuff not just a small portion of the formulation) is so wonderful why don't we use it more? Has anyone ever used products from SutherlandWelles http://www.sutherlandwelles.com/ ? Twisp http://www.twispenvironmental.com/ ?
Also in a previous thread on SMC about shellac, the topic of premixed vs mix your own was discussed. It was pointed out that shellac degrades as it absorbs moisture once the can is opened. In the above thread at Woodweb, one contributor states that shellac begins to "polymerize" the moment the solvent dissolves the flakes and that even though the can is unopened, its qualities are degrading as the can sits waiting to be purchased by you and me.
P.S. Now that I've come out of my shop to post I promise to be a better member of the community in the future!
P.S.S. Sorry for those who read SMC as this is a cross post!