I rolled the second coat onto my second-hand chest in full sun just to speed the drying up: an hour later, standing back, I understood what the roller had dragged across the top
What looked like a clever shortcut—rolling paint in bright sunshine to speed drying—turned into a textured disaster. An hour of heat created a surface skin that trapped wet paint underneath, and the roller dragged up half-cured ridges that couldn’t be smoothed away. Here’s the chemistry behind the mistake and how to fix it.