by jorge » Sun Oct 18, 2009 3:26 pm
Depends where you live. In NYC, although I greatly prefer the Watco oil finish for reasons given in the previous posts, by itself it does not give adequate protection against the annual humid/dry cycles caused by indoor heating / drying in the winter and the very humid summers. Both of my Skin on Skin oak drums finished only with Watco cracked in multiple places within the first 3 years I had them. Jay Bereck fixed them no problem. That was 25 years ago. I refinished one with satin polyurethane over the Watco, it looks almost as nice as the bare Watco, and it hasn't cracked since. The other one is still bare Watco finish, which is very easy to touch up, but the glue between some of the staves has dried out and I think it is due to the humidity changes and not having a sealed polyurethane coating on the outside. I would never put any finish on the inside wood, I don't like the plastic-y ringing sound it gives.
In Southern California, you don't have the humid / dry cycling of colder climates, so you can probably get away with bare Watco. Even so, putting a few coats of polyurethane over the Watco looks almost as nice and seals the wood, although it negates the easy touchup feature of oil finished wood.