While you can use a standard trimmer to cut Kaizen Foam, the inexpensive Standard Blade Kaizen Knife has a triple-edge blade that is 50% sharper than standard blades, with a comfortable moulded rubber grip, a double-tooth steel track for a positive action and auto blade lock. The blunt hook at the other end is great for cutting through sticky tape making it a great box opener in a warehouse or workshop environment. We use these here at Timbecon all the time and reckon they're great!
FastCap have developed a new Thin Blade Kaizen Knife featuring an extra thin blade ideal for cutting tight contour shapes in Kaizen foam. It has a more durable metal and rubberized plastic grip than the standard knife - being a specialty knife it will be durable for longer in a workshop environment.