Abstract: A grooving sled for use with a pre-formed groove blade and hot knife, for making grooves in expanded polystyrene foam boards or walls. The grooving sled includes a built-in straight edge guide, one of two cutting position margins, and a stabilizer plate that fits inside a freshly-cut groove to keep the grooving sled straight while operating along the cutting layout line established on the board or wall. The stabilizer plate aligns with the groove blade by use of an angular adjuster, and if necessary, an insert bar. The stabilizer plate can also be adjusted vertically.

Abstract: A foam grooving sled has a built-in straight edge guide which comes with a stabilizer plate that fit inside the cutting groove to keep the grooving sled straight while slide along the groove layout line on the wall. The stabilizer plate is adjustable between 90 to 45 degree angles. It has a fixed margin from the left side edge of the grooving sled to the groove cutting line for easily layout the groove position on a wall.