No. Thermocouple. I stand corrected. The thermocouple isn't an absolute necessity at the current time, but I miss having it working correctly. It has been needing replacing for a couple of years and I could have used it to measure wax temperatures recently. Instead I used a cheap, wireless IR thermometer.
To be honest, I don't remember. Either a flame or I was experimenting with solar cookers using fresnel lenses a few years back. These can become quite hot with large lenses like I had (3000+ F), so chances are concentrated solar energy hit the insulation and melted it. Not sure, however.
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