Drawing set with 3D pens 4in1

The main and main difference between these 3D pens and all others is that they do not have heating elements, which means they cannot get burned, and this is the main thing! The principle of a 3D pen is simple: the cartridges contain a liquid polymer (plastic) that hardens under the influence of ultraviolet light. A special removable ring attachment with built-in UV lamps is placed on the nose of the pen body, aimed at the polymer emerging from the tip of the pen when the body is pressed, thereby hardening the plastic. The polymer itself is in the cartridge and is very convenient to change.