To further answer Sean’s question about the temperature rating of the Aliexpress Adjustible leather iron. I measured the temperature, using a Coverite analog thermometer and a ThermaPro digital oven thermometer. Power source is 120v US electrical power.
Iron dial setting Coverite Temp ThermaPro
300 C 192 C 163 C
325 C 214 C 200 C
On a second iron, from a different seller, but with the same “Jingda Thermoelectronic Products” label, a setting of 295 degrees C yields 205 degrees C, just what I want for heat sealing.
So, yes, the small dial thermostat gives some variance in readings from instrument to instrument, as expected. But No, with two irons to compare, using 120 volt power does not reduce the temperature by 50% as portrayed on some of the Chinese seller’s websites.
Bruce
Fairbanks