the idea of writing in bas-relief is based on using a separate sheet larger than normal (about 1 to 1.5 mm) and a pen with the top slightly heated.

the material from the film composition reacts with the heated top of the pen and melts slowly

inside of the pen there is a rechargeble accumulator and a direct resistor with the top of the pen

bas-relief writing can be used of writing of book covers, greeting cards, etc Read Less