Answer
Use lighter pressure and let the abrasive cut. When sanding needs more cutting power, switch to a coarser grit instead of pushing harder.
Why it happens
Heavy pressure overloads the backing, catches the abrasive on high spots, and can tear the sheet before the grit is worn out.
Recommended grit
Use the correct grit for the cut needed. Move coarser for removal, then refine with the next finer grits.
Wet or dry
Use wet or dry based on the surface, but keep pressure light in both methods.
Success check
The sheet cuts steadily without tearing, wrinkling, or snagging under the sanding motion.
What to do
- Stop when the sheet starts to wrinkle, snag, or tear.
- Check whether the grit is too fine for the amount of removal needed.
- Switch one step coarser instead of pressing harder.
- Use a sanding block to spread pressure evenly.
- Sand with steady, light passes.
- Replace torn pieces before they scratch the work.
- Move finer only after the surface is level.
Avoid: Do not use pressure to make the wrong grit work. It can tear the sheet and leave deeper scratches.