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Contributed by Jeff Jewitt of Homestead Finishing Supplies

Day 1:

• Prep sand the wood with 220-grit sandpaper.
• Spray a wet coat of General Finishes Enduro-Var Gloss and dry for 2 hours.
• Level sand with 320-grit sandpaper.
• Spray a second wet coat and dry for 2 hours.
• Lightly sand with 320-grit sandpaper.
• Spray a third wet coat and allow to dry overnight.

Day 2:

This issue is caused by a change in humidity in the house when the winter heating season starts. This is a very typical problem when painting over existing finishes. The cracking is a result of expansion and contraction.

When you apply numerous heavy layers of primers, paints, and topcoats, they can crack at the joints or angles when the humidity changes. The cracking occurs when the door panel shrinks and breaks the heavy paint layer.

There are two options when it comes to fixing this problem: 

ROUGH, DRY SURFACE 
This is called dry spray. You may have sprayed too lightly.

Re-sand the finish with 320-grit sandpaper and apply a heavier coat. Keep your gun at 6-8" from the surface.

This response is true of prepping and existing finish on furniture, but kitchen cabinets are more problematic because they are work areas where grease, steam, food splatters and oil from hands are common. Prep is basically degreasing and abrading the surface for better adhesion. Oil or substances on hands really show up on a failed re-finish around doorknobs and hands if the surface is not cleaned thoroughly.