I am working to build a device that includes an air pump and heater. The pump will push air through a tube at the end of which will be a heater element. After doing some research, it seems that Nichrome is the standard heating wire for hobbies. I'm planning to have the heater in a glass-section of the tube. My concern lies in the nichrome's connection to the circuit -- first, solder I assume is a bad idea since the heater's temperature could be over 400 C, so I will use crimp-terminals. Still, isn't there a problem with heat conducting beyond the heater and through the connecting wires, and how much of a problem is it? My plan is to use high gauge nichrome, 28AWG or higher, on a 12V circuit. It is likely that the heater will be on for an extended period of time. Any and all help is appreciated.