Newbee has question about bending slate!

Quoted text begins.have a hammer drill that could take a good size grinder - what kind of grinder
End of quote.

wheel would I look for for limestone?

Rick,

Granite City Tool has a diamond grinding disk that could be mounted on drill:
< http://www.granitecitytool.com/stone-tool.cfm?itemnum=2540&catnum=0 >

The Zek disks mentioned in the description are 'infamous' because they
tend to fly off during grinding, becoming flesh-seeking missiles.

If you can raise the money sometime, get a 9" angle grinder and fit a
carborundum cupstone to it:
< http://www.nortonabrasives.com/industrial/safety/AbrasiveCupWheel.asp >

More grunt means easier working. I choose a grinder by selecting the one
with maximum wattage and the most comfortable balance in my hands.

Simon