A fellow knifemaker showed me a knife handle with a smooth, polished, attractive finish. I asked him about it and found out it was tung oil. Then I heard about some other knifemakers using it so I went out and bought some at Ace. Before I used it I decided to research tung oil. I found out a lot about it, including some interesting research and history. I also found a forum with some disturbing information. Experienced woodworkers claimed that the particular product I had bought, and others on the market, either contained no tung oil or a very small percentage of polymerized tung oil, which apparently isn’t considered oil at that point but varnish. So I decided to go to the source.
I called Minwax and spoke to Julie. She was obviously trained to deal with people like me because she was ready with answers or non-answers. I asked her first if the product, shown in the picture above, contained tung oil. She assured me it did but that she couldn’t tell me how much because that was proprietary. Then I asked if it was raw oil or oil that had been processed. She said she’d have to go ask someone and put me on hold. When she got back she told me that it was polymerized oil. Finally I asked her if the product contained other oils besides tung oil. Again she told me it did but she couldn’t tell me any more than that.