As a young engineer, I was tasked with visiting suppliers for a heating coil made of tungsten wire (used to superheat the exhaust gas on a small spacecraft thruster). The alloy of tungsten used was very brittle, and required winding at red heat. One vendor passed electrical current through the wire, spinning it onto a mandrel on a lathe. They were struggling to keep the wire from burning out during the winding process (too much current) or snapping (too little current). The other vendor was more successful, and used two guys, one hand winding the wire on a mandrel, and the other holding an oxy-acetylene torch. The guy with his hand on the crank could feel the torque and adjust his winding speed as needed to avoid breakage; the torch was set to a highly rich flame to reduce the oxidation of the hot wire.