Urethane won’t dry
I have been making a set of coasters to go along with an oval cheese board. The coasters are the same design except they’re round and I used the opposite combination of wood for the coasters. They are made from Maple and Padauk and are 4” round X ¼” thick. I will attach self-adhesive cork on the back once they are finished. My problem is with the finish. I usually find finishing the most challenging part of my projects.
A brief background; my house is on the market and I’m trying use up what I have on hand before the move. This was all good wood but I was limited in my choices.
I decided to finish the coasters by first giving them a couple of coats of natural Danish Oil. I then waited 3 days for the Danish Oil to set up then used a rattle can of Minwax Gloss Spar Urethane. The final coat was going to a satin Polyurethane. My problem is that, after a week, the Urethane over the Padauk strips is still tacky. It’s dry on the Maple. I may have not let the Danish Oil dry long enough, I may have sprayed too heavy a coat onto the Coaters or the Urethane may have been too old. I don’t know if rattle cans go bad or not.
Knowing what went wrong would be interesting information, so I don’t repeat the error in the future, however, the important question is: “What do I do now?” Starting over is not an option. I’m out of the Padauk. Should I try to rub off the finish with Mineral Spirits, should I sand it down to take of the Urethane, or is there some tried and true method of getting the Urethane to harden? At this point I’m stuck and would really appreciate any suggestion as to how to save this project. It’s being made as a gift and we’re going to see the recipients in about 2 weeks.