If you don't want to wait for a glue gun to preheat or leave it on all day just use clear glue stick and torch.
Changed your idea to a Winner.
The idea was good, but even better when I bought some thin, low temp sticks. Melts easily, doesn't cause as much stringing
and comes off easily. This also helps in not having to worry about the scan plate snapping onto the scanner base and breaking the
sticky wax when doing the bite scan. No electric cord and gun to get in the way, or forgetting to unplug it, let alone waiting for it to heat up.