After several angst laden discussions with my husband about the chemistry involved with curing polymer clay, he, being a problem solver, took the whole issue under his wing. He purchased this wonderful item and ran a battery of tests with me.
This type of thermometer allows me to see, in real time, the temperature of the interior of the oven, it allows me to set a highest temp. alarm that goes off if the oven runs higher than 290F and it also keeps track of temperature range. I now know that my oven cycles to 312, and then to 294 and then its ready. Once pre-heated, I pop the battery out, and re-set and the temp. so I can keep track of the the actual range while a piece is being cured. My oven has a 14 degree cycle range with my new vent (see below) running. I've also found that keeping a ceramic tile in the oven helps to even out the temperature (without it the cycle range is more like 20 degrees).
Kyle finished installing the vent in the corner of the studio that will house all of the things that need to be vented. Soldering will take place directly under the vent, the oven is obviously in the middle and the pickle pot will be to the right.