Hi Krokodyl, mostly using balsa/ply traditional building methods these days I do confess to having dabbled with some alternatives such as foamcore, corroplast, cardboard and so on some years ago but never messed with hot glue guns much.

However my wife in the past did operate a retail craft store and run crafting classes. I have vivid memories of her firing up a minimum of at least four of those cheapie glue guns just when she was working alone and when she was running classes wow did the electric bill go up. And it was just for the reasons you described.

A better choice turned out to be guns like these:

I https://www.uline.com/Product/Detail...e-Gun-450-Watt

But guns that perform like that start out at around a hundred and fifty bucks.

John