Which action best reduces risk when a sanding disk becomes loose?

• A. Continue sanding at a lower speed
• B. Shut off the sander and inspect the disk
• C. Hold the disk in place with pliers
• D. Stop, tighten or replace the sanding disk

Answer: (D)

A sanding disk that isn’t secure is a serious safety risk because it can fly off or shatter during operation. The quickest and most effective way to reduce that danger is to stop the sander, shut it off, and then tighten or replace the disk before using it again. After turning off and unplugging the tool, inspect the disk for wear or damage, reseat it so it sits flat, and tighten the clamping mechanism to the manufacturer’s specification. If the disk is cracked, worn, or won’t tighten properly, replace it.

Continuing to sand at a lower speed doesn’t fix a loose fastener and can still let the disk detach. Holding the disk with pliers is dangerous and could injure you or damage the tool. Merely inspecting and leaving it loose isn’t enough to reduce risk.