You can extend the the time it takes hot-melt glue to set by slightly pre-warming both the surfaces to be joined with a heat gun. A heat gun also works great for stripping paint and other odd jobs. For example, you can use it to remove bumper stickers, defrost freezers, char-stain wood, dry wood for painting, burn weeds from cracks in sidewalks and patios, light charcoal, loosen rusted bolt nuts and bend certain plastic piping.