the hook and loop pad on my sander lost all its grip, sandpaper flies off after a minute

Diagnosis

The loss of grip on your DeWalt DCW210B sander is typically caused by "hook saturation." The hook-and-loop system relies on tiny nylon hooks engaging with the fabric backing of the sandpaper. Over time, fine sawdust (especially from hardwoods or MDF) and melted adhesive from overheating discs migrate into the base of these hooks. This creates a layer of debris that prevents the hooks from fully penetrating the sandpaper backing, causing the disc to slide or "walk" off center during high-RPM orbital movement. You can confirm this by running your finger across the pad; if it feels smooth or "slick" rather than scratchy and aggressive, the hooks are clogged. In more severe cases, the nylon hooks themselves have been physically sheared off or flattened due to excessive pressure or using non-compatible, low-quality generic sanding discs. If the pad looks "bald" in the center, the physical structure of the hook system has failed and cleaning will not restore the grip.

How to Fix It

To restore the grip of your DCW210B pad, follow these precision cleaning and restoration steps:

1. Disconnect the 20V Max battery immediately to prevent accidental startup during maintenance.
2. Use a stiff-bristled nylon brush or a specialized hook-and-loop cleaning tool (a metal comb with fine teeth). Do not use a wire brush, as this will tear the nylon hooks.
3. Apply firm pressure and scrub in a circular motion, focusing on the center of the pad where the most friction occurs. Dig the bristles deep into the fabric to lift compacted dust and "pills" of adhesive.
4. If you see gummy residue from melted glue, dampen a lint-free microfiber cloth with a small amount of mineral spirits or isopropyl alcohol (90% or higher). Wipe the pad firmly, then immediately use the nylon brush to scrub the loosened residue out of the hooks.
5. Use compressed air (set to 30-50 PSI) to blow out any remaining particles from the base of the hook fabric.
6. Allow the pad to air dry for 10 minutes. Test the grip by pressing a fresh 5-inch hook-and-loop disc onto the pad and attempting to peel it off horizontally; it should require significant force to slide.

If That Didn't Work

• Replace the Backing Pad: If the hooks are worn flat, you must replace the pad. For the DCW210B, ensure you use a genuine DeWalt replacement pad (Part #D25250 or equivalent). Remove the three screws on the underside of the sander using a T15 Torx driver, lift the old pad, and secure the new one ensuring it is perfectly centered to avoid vibration.
• Switch Disc Brands: Not all "hook and loop" discs are created equal. Some generic brands have a looser weave in the backing fabric. Try switching to a high-density professional grade disc (like 3M or DeWalt branded) to see if the grip improves.
• Check for Heat Build-up: If discs are flying off specifically after a few minutes of use, you may be applying too much downward pressure. This creates friction heat that melts the adhesive on the disc backing, causing it to slip. Reduce pressure and let the orbital action do the work.
• Inspect the Pad Surface for Warping: If the pad is no longer perfectly flat (convex or concave), the sandpaper will only make contact at certain points, reducing the overall surface area of the grip and making it easier for the disc to spin off. Replace the pad if it is warped.

Heads Up

• Avoid using "universal" sanding pads that aren't specifically rated for the 20V Max orbital speed; low-quality pads can degrade the hook system faster.
• Clean your pad every 3-5 disc changes. Dust buildup is cumulative and will eventually lead to the "slick" feeling that causes disc failure.
• Never use solvent-soaked rags to clean the pad while the battery is inserted, as flammable vapors can ignite if the motor brushes spark.
• Store your sander in a dust-free case or bag; ambient shop dust settling into the hooks over time can reduce the lifespan of the pad.