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Paul,
I did it this weekend on 2 sets of soft maple darters with spar urethane. The first time I heated it to like 250 like usual and it soaked it up like a sponge but in the places it didn't absorb as well it started to set up and dry too fast. The lip cut was still soaking it up but the stuff on the straight part of the body was building up. I ended up wiping them down with acetone to start over.
The next batch I lowered the temp to 200, it still sucked it up but they dried slower and I had time to wipe of the excess before it started to dry. Its amazing how much faster the end grain surfaces absorb it. On the darters the 45 of the lip and the curve of the tail soaked it up like 3 or 4 times...
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