Sides for acoustic guitars and the curved binding are bent over a form. A heating blanket is used for heat and is controlled by a speed control and an electric darkroom timer.
The speed control is pinned to prevent it from being able to switch to full current, making it work ONLY with the dial resistor.
The timer is a safety feature to prevent the blanket from remaining on too long.
If the temperature gets too hot for too long, the wood gets scorched or charred. In the worst case scenario, a fire could break out.
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