http://www.forrestrace.com/diamond-tipped/
How do I properly cut stone slab with a diamond tip hole saw?
Could I effectively use the “template method” by clamping a board with a hole in it to the slab to eliminate inaccuracy? I know a drill press would be the way to go, but I’m short on cash at the moment. All I have for a drill is a cordless power drill.
People were cutting stone slabs for thousands of years before we had electricity so it really isn’t that hard if you want to get the job done.
Place a slab face down nice and level – preferably in sand- and score a line across the back about 1 or 2 mm. Then turn it over and do the same on the front.
Repeat the process and you will find that it will break evenly after you have done it a few times.
The key to success is to take you time and don’t hit too hard. Use a club hammer and a bolster (wide chisel) to get the job done.
Good luck
Mods for Minecraft: Diamond Tipped Armor, a Work in Progress