The kiln under full fire (around 1700F).
approaching the magic point of 1850-degrees F
.........finished. 31-gallon trash can with 1-inch 8# ceramic fiber. Double-thickness on the floor and lid of the kiln. The heat source is a Harbor Freight weed burner hooked up to a 20# tank at the moment.
The initial raku fire went well - about 45 minutes to reach 1850F (taking it slowly). Nothing melted nor caught on fire. Now the fun begins.