Handling the paper
Curling clues:
Abrasive paper will curl up and crack if it’s left lying around. To keep the paper from curling, place a weight on it. Or store the paper in the freezer so that heat and humidity won’t affect the adhesive holding the abrasive to the paper.
Flexing paper:
Abrasive paper is usually stiff and brittle, [...]

Sanding can make or break a wood project’s appearance. Even perfect looking factory-planed lumber needs hand-sanding to open the grain and promote even staining. A final hand-sanding is also essential to remove the tiny swirl marks left by orbital power sanders. For professional looking results, follow these tips:
Use the right grit size:
First assess the smoothness [...]