The cutter or grinder could fall out and cause injury.
Pull on the cutter or grinder to check that the chucking system is okay and the cutter or grinder is securely held. When checking, inserting and removing,
use gloves or a fingerstall to prevent an injury or infection.
Press the push button firmly with your thumb and simultaneously insertthe milling or grinding tool until it contacts the stop.
Check that the cutter or grinder is securely attached by pulling on it.