Overall, the glueing process is clean, as the pen doesn’t leave lots of trails like some rival products do. The nib is also small and precise, meaning it’s possible to place tiny amounts of glue for those really intricate tasks. The best hot glue gun isn’t necessarily the most powerful one though. If you’re involved with delicate crafts or work with heat-sensitive materials, you don’t want a whopping great 100 Watt element spreading molten glue all over your work.

Although extremely simple in its design, the Bosch GluePen feels well built and sits nicely in the hand. There aren't many moving parts, so it’s not like there are flimsy clips or cheap buttons to let the side down. I love this glue pen. It was given to me by my Mum two years ago for Xmas and I've used it a fair bit since then. I've used it to make various glue art items, mostly book or journal covers.” The power rating of most hot melt glue guns is measured in Watts. The higher the Wattage, the faster it will melt the glue and the hotter the glue will become. Inside the casing is a heating element, and when electricity is passed through it, it gets hot.