Odie
Panning for Montana gold, with Betsy, the mule!
I suspect you would have better results with waiting several weeks or more. Anything that has penetrated is going to take longer to polymerize (particularly after surface polymerization).
I suspect you're right.....
I also suspect it could take much longer than several weeks!
The Watco DO info says it "seals" the wood and hardens. That is the prescription for a longer wait I think.....
Anyway, I have another spalted bowl that I'm going to try using a thinned Titebond III wood glue as a medium instead of the DO.
Stay tuned....
=o=