I have heard of some folks here saying not to use them, something to do with the heat rising, can't remember exactley why not to use them, exactley.
Have you checked on Sugar Creek Kilns? Boss Dog sells them, they are affordable as far as kilns go, and mine has performed very well, they use the same computer control as Even Heat, and the largest knife making kiln they make is close to 2 feet long! I love mine, (more now) since I got the computer control, I added it well after I bought my kiln, I was able to get the large kiln that way, the only problem in not getting the computer control is you have to sit with it while your blade is cooking, not like you have to sit right there with it, you just can't walk off, go in the house, watch TV for a little while, etc, of course you can't do that with the computer control either as you have to be ready, once you get to temp to do the quench, it is a PITA trying to keep the target temp right where you want it, it will fluctuate 10 to 20 degrees. As long as you stick primarily to high carbon, the 10XX series steel you'll be fine, if you plan on CPM's, ATS, etc, type of steels I would highly recomend the computer control, actually I think I would send mine off, as most of those require a sub-zero temper. And getting liquid Nitrogen is expensive, not the Nitrogen the Dewar you have to have befor any of the suppliers will sell it to you. I have heard of some selling to people in thermos, personally I'd say that is a bomb waititng to explode, or a vehicle getting ready to crack!
A whole more info than you asked for, hope this helps, Rex
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