I tried my first time at thinning some poly and applying it with a cotton towel, but the finish hasn’t really set up. Its not exactly tacky, but its not dry either. I thinned the poly (oil base) with about
25% mineral spirits as directed by a post I saw. Also, near some corners of the piece, there’s a white-ish color from the finish.
What might be going wrong with what I’ve done? Should I try to sand the piece and start over? The wood is white oak. Could I have thinned it too much? Should I just change course and finish it with laquer (after sanding it again)?
Any advice is appreciated.