I want to make wooden curtain rods and curtain rings, and finish them so that the rings glide as easily as possible along the rods. I'm leaning toward red oak, but I'm still considering other hardwoods too.
In the past, I've always used polyurethane as a finish. However, I feel that poly wouldn't work well in this situation because it's in a window, so subject to solar heating, which can soften it a little and make it tacky.
My requirements for the finish would be:
- smooth finish with low friction so that the rings will glide easily.
- stable over a wide temperature range; won't soften in direct sunlight, and can withstand any condensation that forms on cold nights.
- UV resistance is a nice-to-have but the windows are new and block most of it, so this would be lower priority than the other requirements.
What would be an appropriate finish to use for this project?