It was already reported a lot about this Gluepen. I can only agree: Absolutely great idea to make glue guns wirelessly, and finally it drips relatively little, and man burns not the fingers. Here's a tip that is little discussed: VERY IMPORTANT are the glue sticks that are used. I've done the best results with the Power Sticks orginal Bosch. Sticks like hell, and holds. Since the Noname are nunmal very low, I could not resist. And already it was made with adhesive performance. The suck maybe seal for stamps and letters. Try it and decide for themselves!
Another important tip: Adheres to something at / near large metal objects, these previously heat with a lighter. This again increases the Klebekrakt. If you have smooth surfaces softer such as coated wood, this previously roughen something purely make a few scratches with a knife is also sufficient. You will be amazed how this, the bond strength is increased.