This craft does not require knowledge of working with metal, therefore it is simple for not experienced homemade craftsmen. Another advantage of this design is the speed of its manufacture.
To create a tool you will need two rectangular pieces of wood or thick plywood. The cutting element sets the clerical knife blade, so when the knife is dull it is easy to replace.
The device has several holes for removing insulation from wires of various thicknesses. Having made this craft, you will surely be using it for a very long time.