The Hot Knife is an excellent accessory for the artistic minded foam cutter. Double insulated, it heats up in 6 seconds so you are ready to create quickly. The Hot Knife is light, weighing only 2 ½ lbs. It creates smooth, clean cuts so clean up is easy. Interchangeable blades make it simple to create extraordinary designs in ICA-LITE® EPS foam. Every foam carver needs one of these!