That is why I am getting the diamond wheel. The one on my bench grinder is about 3" in dia. and will soon be hitting the arbor. I bought a new one the last time I was at the welding supply store and after I got back to the shop I looked at the tool grinder and thought, why not get a diamond wheel and save buying green wheels so often.
How are you guys introducing water to the wheels on your grinders? Mine came with a single cup with a flexible hose on it. You have to move it from side to side depending on which side of the stone you are using. It's a joke. There must be something better.
Jere