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How can I remove runs in varnish?
I am applying a good quality marine varnish (z-spar) to an exterior door casing and associated trim and had a few runs early in the piece after the second coat which was applied at full strength. Sanding between coats using 320 grit along with thinning the varnish by 10-15% seems to have helped a little but I noticed that the sanding is thinning the surrounding areas along with the runs. I'm up to my 4th coat and will probably apply a total of 5-6 coats over the mahogany. Can you suggest a method to remove the runs without removing the surrounding varnish and stain?