It was a 19 n 1/2 hour firing. There are gas ports in this car kiln, we supplemented the firing with gas through quartz inversion, which homogenized the heat in the kiln.
There is one big crack at one arc which is disturbing the line of the arc. except for that I think achieving this work has been a leap.
After reaching a partially successful piece the one and only thing I can say about it is that
"Only if it was even a little simpler...... it would not have been fun.. :)"
All the people who helped me with it, know; how grateful I am to them; for, without them I could not have come this far, ever.