How Do You Make A Heating Coil That Can Go Inside An Ice Cream Scoop.?
Two possibilities: 1.) Rely on the ability of metal to conduct heat and place the heater coil near the base of the scoop. 2.) Work on creating a heated scoop using custom machining to make a prototype. The scoop would be in two halfs one would nest into the other. In the space between the two halfs you would insert your resistive heating element. As far as a circuit is concerned you only need to feed it battery current and not worry about temperature regulation. Just a simple series circuit operated with a push button. You might include a bi-metalic thermal cutout as a safety device but still just a simple series circuit. A fancier circuit would measure the temp with a thermistor and send a PWM modulated current to the heater for a temperature controlled unit. Or you can always soak the scoop in warm water before use.
