Flags?

I had a large teak salad bowl, desperately in need of refinishing, sitting in my shop for a long time -- maybe a couple of years. I was running out of vacant horizontal surfaces, so I decided to get it done. 

I tried cleaning the inside with isopropyl alcohol, and after removing a couple of layers of salad oil, decided that was good enough (extra 1). I sanded the outside down to bare wood (extra 2) and rubbed on two coats of tung oil (extra 3). I might give it one more coat.

Tung oil -- like several other natural oils -- hardens by reacting with the air. It's an exothermic reaction -- in other words, it creates heat. Many unintentional fires have been started in this way. I take all my wiping rags and paper towels outside and leave them on the patio for several days. Now you know what the blip is!