We have to prepare random cracks in an elevated concrete slab before sealing them. Who makes power equipment that can be used for this purpose?
You're probably referring to either a random crack saw or a router. Random crack saws make a 1/4-inch-wide cut or wider. These walk-behind units follow the irregular path of a random crack and produce a smooth-walled sealant reservoir of uniform cross section. Dry cutting versions are available. We know of two manufacturers: Cimline Inc. P.O. Box 680 Hopkins, MN 55344 800-328-3874 SINCO Products Inc. P.O. Box 361 East Hampton, CT 06424 800-634-4079 Crack routers use either a rotating or percussion router bit to produce a sealant reservoir. The cross section may be funnel shaped or uniform near the surface and funnel shaped at the bottom of the reservoir. Two sources that we know of are: MacDonald Air Tool Corp. 242 West St. South Hackensack, NJ 07606 800-328-7773 Windsor Machinery 3311 Berlin Turnpike Newington, CT 06111 203-666-3654