I picked up a bottle of the Ultra Thin a couple of weeks or so ago. I've primarily used it as a deep filler and stabilizer so far, for which it works better than any other CA I've ever used. It really wicks in and penetrates deep, so it actually works really well as a stabilizer. Notably on pinecone resin blanks (or anything similar that might have punky, soft, brittle, etc. wood or other plant material encased in resin), it really helps to stabilize the pinecone (or whatever) and fill any voids. The ultra thin DOES work well as a thin coat finish on resins. I have tried it on both Total Boat and Alumilite. It helps fill any pits, which I get sometimes (have a small leak with my pressure pot that I need to fix), and produces a crystal clear smooth finish. Its a good test, too, to see how your finished blank might look like, how resin might look, what the chatoyance of the wood might look like, just as a test, before you fully finish.
I took a cue from John U when I purchased it to use it as a final finish coat to fill in any scratches, pits, etc. on any turned blank. So I generally do that. It looks like he demonstrates this in his video above. Its really amazing what you can do with an ultra thin water-like CA. It's pretty darn versatile stuff!
