D. Grinder Safety:
1. Bench: Now these can be some really scary beasts. I have been using Bench Grinders for over 25 years, and have seen some pretty messed up things.
a. Wear eye protection (I recommend a full face shield) and gloves.
b. Do not wear loose hanging clothing.
c. If the material being worked produces a lot of dust or other particles, wear a dust mask.
d. NEVER use a badly worn, cracked or out-of-round wheel. (You havent lived until you have had a wheel EXPLODE in your face, YEAH, love those face shields!!! I wish I kept that face shield to show you a pic.)
e. Allow the wheel to reach full speed before getting into the grinding position. (A cracked wheel may blow and anything down in the guard will shoot out. before you get in front,)
f. Make sure the grinder has a guard. (Bare wheels can be bad news)
g. Place the tool rest 1/8 from the wheel. (Why? A big gap allows the item to be pulled down into the grinder and shot back at you) (Face Shield)
h. Grind on the face of the wheel. (Using the sides may weaken the integrity of the wheel leading to catastrophic failure)
i. Use vise-grip pliers or clamp to hold small pieces. (Your fingers cant hold it as well, and the material can get very HOTTT Very Fast)
j. Move the material slowly across the wheel face.
k. Allow the wheel to stop naturally when turning it off. (Dont use your hands E-candidate. The motor can keep going a while if there are fingers down in there or not.)
l. Periodically check for soundness of grinding wheels. (I like to give them a LITTLE tap on the side with a metal object before I start it. A Dull Wheel Is A Dead Wheel!)
m. Never leave a grinder going unattended.
2. Hand Before starting a portable grinder, look to see where the sparks might fall