Sand with 240 grit or higher 320-400 grit. After the second coat drys for 24hrs. Use an air compresser to blow off the fine white dust, then wipe down with clear or crème mineral spirits. Let that dry for 45 minutes. Use a cloth with very little lent to wipe with, like an old t-shirt. Put your third coat on in a dust free area, using full careful over lapping strokes. Start from one end to the other without stopping. Do not paint it on, it is not paint. Everywhere you stop and start will show. Let dry for 24 hrs. Do it all again if it needs it.
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