Most fires involving either masonry or prefabricated metal chimneys occur because of improper installation, use or maintenance. Here are a few of the most common causes: chimney installation too close to wood framing; thermal insulation too close to the chimney; and, passing the stovepipe or chimney through a ceiling or wall, causing ignition of wood framing. Also, always operate your appliance within the manufacturer's recommended temperature limits. Too low a temperature increases creosote buildup, and too high a temperature may eventually cause damage to the chimney and result in a fire.
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.