Below is a video showing this hot wire foam cutter in use. You can see in the first part that the operator cuts a groove in a block of expanded polystyrene very easily so he can fit some cables, electrical conduits or plastic pipes for example. For this specific job, the operator uses the hot knife cutter with the shapeable blades. He fashioned it by hand, or used a template, and displayed it on the support supplied in the kit, with the other accessories. The operator then adjusts the heat provided to the blade with the wheel on the handle, and drives the thermocutter through the foam. The second part of the video shows a straight cut with a regular blade.