I put the last coat of paint on this vanity on a sweltering 115 degree afternoon. My garage wasn't that hot, but it got close.
The intense heat speeds up the dry time of the paint and can prevent it from self-leveling correctly. This can leave a rough feeling to the paint. The surface looks great, but feels a little gritty as you run your hand over the surface.
This local guy taught me the greatest trick.
Enter…the lunch sack.
Even the finest grit sandpaper will leave small scratch marks in a finished surface, but a paper bag will not. (I've also heard of turning your sandpaper disks over and smoothing out the surface with the soft back side).
Grab your paper sack and run it over any surface that feels a little rough.
You'll be amazed at the difference it makes in the feel of the surface.