A spreading tool has blade for which the width and depth deployment of the blade are each variable. A pair of plates sandwich the blade between them and allow the blade to slide up and down therebetween in order to vary depth deployment. The blade is formed from two plates that each has a blade edge, the two plates slide with respect to each other, varying the overlap of the two blade edges and thus blade width. Slots on each plate with a connector passing therethrough, hold the blade plates together. Aligned slot pairs on the sandwiching plates receive a connector to hold the blade in its sandwiched position, each connector slides within its slot pair and abuts one of the sides of the blade to hold the blade in its selected width. Additional connectors connect the main plate and press plate without passing through the blade.