I thought so too and it does make the cavity smaller now which is not always the best for what I want to do. I was just concerned with fiber walls and brick floor causing something different so thanks for writing your thoughts.
I was also wondering if it is important to use 1 inch blocks of clear 1101 or if you will get the same polorized reading from 1/2 inch clear blanks with dams around them.(it should be the same should it not!) I really want to try to get a good reading. I have gotten a new lid built for the taller kiln which I am waiting patiently for the electricial to finish hooking up, and it is really nice. Phil Teefy did a great job.(Iwanted a kiln with bottom elements too!) I will probably use the smaller for thinner work and use the large kiln for casting. The only thing that makes me abit nervous is when the electrician drilled the holes for the lower elements to stick through the back of the wall of the kiln in the center,(to match up with the electrical box) he has drilled them almost level with a kiln shelf that will hold the large flat glass pieces and I am hoping it will not cause a hot spot right where it should not. (I am going to baffle it and hope this will help. ) Hmmmm eh! All the variables that can happen when you are trying to upgrade. This new element which wraps around the outer lower level and middle lower floor of kiln operates on the same wiring system as the roof elements , so I hope it is all good. I also had to raise the floor by 4 inchs (Phil suggested this) to make the cavity of the kiln smaller.) I am trying to understand how things happen in the kiln space I have and well, I love to create complicated pieces that take a very long time to create and really want them to turn out now.
Give out FREE hugs!