410F is about right for the melting point for some tin-lead solders, though a typical temperature-controlled iron would have a range 250°C – 450°C (somewhat above the melting point, as you need a temperature difference to transfer energy)
You can't easily burn down a house with a soldering iron (unlike, say, a gas stove or cigarette lighter) - best you can do is melt a hole in the carpet.
If you actually want to solder something like wires, the only reasonable substitute for a good soldering iron is a bad soldering iron. Messing around with a blowtorch and a nail doesn't really work, apart from being much more hazardous. You need an iron and rosin-cored solder.
If your parents are nuts, go to a friend's house.