32" build in Calgary, AB - pompeii neapolitan

[david s]

I drilled all the way through the inner dome casting and there's a bit of blow out as the drill broke through the inner surface, but the probe is set flush with the inner surface, not protruding into the chamber and not tight in the hole because I wanted to avoid the problem I had with my previous mobile thermometer (documented in post 207). Because I use a ceramic fibre blanket that is biosoluble and exonerated as a potential carcinogen, I'm not concerned about any fibres passing through the minute gap around the probe, its diameter is barely more than the probe, but sufficient to prevent its expansion from jamming it in the hole. It is neither a thermo well or (Chromel-Alumel) couple, it's a bi metal type.
I'm sure your solution will be fine. The drawback is that the temperature is only measured in one position. An IR temperature gun can demonstrate the very large differences in temperature at different locations of the oven, fun, but can also be quite confusing.