Acu-Cutter 350 Foam Saw is an economical solution for your upholstery projects. Its 8" Blades allow you to cut upholstery foam (polyurethane) with speed and precision. The base plate helps to steady the blades for straight, perfectly vertical cuts. Base plate can be removed for free-hand cutting. *Blade should be kept lubricated with silicone to prevent it from seizing* For commercial use, try our Acu-Cutter 500 model which features dual reciprocating blades!