The Tool Barn

Sanded finish
Sanded finish

Step 5:

Let the finish dry thoroughly.  Usually 24-36 hours.  Make sure that they varnish is not exposed to dust and other impurities while drying. Dry sand the first coat using 150 grit paper.  Make sure the paper doesn't become clogged.  If the paper does become clogged, use another piece.  If you continue with a clogged piece it will ruin the finish.  Remove all of the gloss from the finish.  Look out for shiny spots.  When you are done, the entire surface should look uniformly dull.  Wipe off all dust.

Recoat sanded piece
Recoat sanded piece

Step 6:

Recoat the piece with full-strength varnish.  Make sure that you do not miss any spots or the final finish may not be level.  Let dry a day or two.

Wet sand the finish
Wet sand the finish

Step 7:

Using wet-dry 400 grit sandpaper, wet sand the varnish.  (Note: paraffin oil may also be used to slow down the process) Sprinkle some water on the surface, spread it around and begin sanding.  Check the paper for buildup often, clean with water if buildup seems to be occurring.  Sand in long strokes with the grain.  Be careful not to sand through the finish.  This is especially important around the edges.  Reduce the sheen of the finish evenly.  There shouldn't be any bright spots. 

Wipe haze off
Wipe haze off

Step 8:

A haze will begin to form on the piece as the water dries.  Use a damp sponge to wipe off the slurry and then a rag to dry the piece off.

Wipe down final coat with soft cloth
Wipe down final coat with soft cloth

Step 9:

Repeat as in step 5 until you reach your final coat.  For this coat you can either leave the final coat as-is or sand it.  If you want to sand, you will need to use 600 grit paper and paraffin oil.  Put a bit of oil in your hand and wipe it onto the surface.  Sand down any dust nibs and be careful not to sand through the finish.  Use mineral spirits to clean up the oil and then wax the surface.  If you want a higher gloss, you need to "rub out" the finish but that's a whole different article.

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