As the heating element I used the carbon tape. It looks like a thin, soft cloth and not interfere in a bed.
The carbon tape can be sewed, but instead it can be simply glued. Because of this I did it in just 1 hour!
To make the blanket I took 2 pieces of inexpensive fabric, 6 feet of flexible wire,
20 feet of carbon tape 15 mm from www.carbonheater.us, silver conductive wire glue paste, female plug 5.5 mm and iron-on no-sew hem tape. The desired temperature can be determined from the table.
Put carbon tape zigzag. Zigzag shape can be any that you like.
Under the carbon tape to put iron-on hemming web tape. Gently press the carbon tape with an iron that is stuck to the fabric.
Squeeze between two layers of carbon tape some silver from the syringe, insert the bare wire, squeeze glue place until the glue is completely dry.
Cover with second piece of cloth and gently press the iron over the whole area.
Blanket is a comfortable shelter, but it can also be put on a mattress under a sheet.
And you'll never cry,
Close your eyes and sleep, my angel,
Sleep, dear, rock-a-bye.
During the day I use it to cover my feet in a chair.