Q: In the February 2001 issue of CONCRETE CONSTRUCTION, a reader asked, "Is there any way to saw joints all the way to a wall?"

A: The way I've solved this problem numerous times in the past is to use a diamond blade on a 4 1/2 inch side grinder. The blades are comparatively inexpensiveù$10 to $14. Of course, the guard should remain on the tool, but, even so, you can still cut the joint to within 1/2 inch of a vertical surface.

Mick Anderson, Anderson Construction Co., Ft. Gaines, Fla.