Dave Symons's Article in Home Improvement

564 The Hardest Building Materials and How to Cut Them
How to choose the right blade to suit various building materials. If you want to cut a lot of hard natural stone or metal you will need a cutting disc with cooling holes, whereas for cutting roof tiles you can use a general purpose blade. Choosing the right tool will help you get a better finish to your work.
Posted on Oct-13-2010