Reply by AJLastra

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Posted on a little confused about watco danish oil

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87 posts in 2253 days

#1 posted 05-02-2012 05:39 PM

30 minutes in ideal conditions…...........and many of us simply dont finish in conditions that are 72 degrees and 40% humidity. That being said, you CAN try sanding it. But be prepared. If the varnish isnt dried through, it will corn…you’ll get gunk on the paper and it will glog. I would sand it DRY. Dont add more liquid of any kind. You might be tempted to wipe it down with solvent. DONT. Applying mineral spirits or naptha could cut through the coat you have applied and dissolve the coats under it. Sand it until you get a surface that doesnt feel tacky. To build up your successive coats on top of this sanded surface, I would strongly recommend you apply a coat of Zinseer SEalcoat, 2lb cut clear shellac before you put another coat of varnish on that piece. The shellac will form a barrier coat between what you have layed down already and the next series of top coats. If, for some reason, the last coat of Watco was in some way contaminated, didnt bind, etc, the shellac will seal the previous coats and it will be like starting over again with your next coat of varnish. At the same time, you will have put another layer of protection, granted a thin one, on your work piece by using a shellac barrier coat. you will know if the previous coats are dry if you simply sniff the piece. It shouldnt smell like varnish if its dry.

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