How warm does the wooden head and jubilee clip get during use ?
Interesting question, I took a few measurements with the barbecue thermometer (max. 250°C/ 482°F) without any effort.
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Of course, the measurements are not scientifically valid, but I think it is enough as a reference point.
(Please excuse the partly bad photos, I am a little bit in a hurry. ;-) )
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The measuring points:
(I hope the conversion to Fahrenheit is accurate, otherwise please correct me.)
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1.) Protective glass in the middle (215°C / 419°F)
2.) Metal clamping ring (54°C / ca. 130°F)
3.) Inside of the head (98°C / ca. 209°F)
4.) Top outside (43°C / ca. 110°F)
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The ambient temperature is 28°C / ca. 83°F.
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1.) Protective glass in the middle (215°C / 419°F)
Inside the glass, directly next to the bulb, I estimate a temperature of around 230-240°C / 446-454°F.
(Since I don't have a professional temperature measuring device, I have to guess. ;-) )
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2.) Metal clamping ring (54°C / ca. 130°F)
I can touch the metal ring briefly with my hand without any problem; real working-class hands probably wouldn't even bat an eyelid. ;-D
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3.) Inside of the head (98°C / ca. 209°F)
The inside is covered with mica.
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4.) Top outside (43°C / ca. 110°F)
In my experience, the risk of burning myself on the glass is very low because I always put the vapo away by the housing. Even if the arm is still moving a little, it can't touch my hand. In any case, I have never been burnt so far.
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As a foreign speaker, I don't understand your second question very well, please excuse me.
In any case, it has enough space for a large herb filling in the heating glass chamber and, as you can see in the first photo, the whole arm can be pulled out of the housing, the distance is only limited by the heat-resistant silicone cable.
(This could probably even be customised, provided the device was made especially for the customer.)