If your door is a 3" deep metal pan (5-sided box), the standard way is to do an accordian fold with the Kaowool and stuff it in there with the "corrugations" running vertically. If the door is subject to a lot of slamming or banging, then you'll want to jam a couple or three 1/8" or 3/16" stainless steel welding rods through the door sides and the Kaowool so that they punch through all the folds and keep them from popping out.
If your door is curved or spherical, then you can hold the Kaowool in with SS wires through the door. Or use Plistix or ITC-100 or other refractory plaster to rigidize it and "glue" it in place. Mechanical fastenings are really the best however, due to expansion and contraction with heating cycles.
Rob, If your door is a 3"
Rob,
If your door is a 3" deep metal pan (5-sided box), the standard way is to do an accordian fold with the Kaowool and stuff it in there with the "corrugations" running vertically. If the door is subject to a lot of slamming or banging, then you'll want to jam a couple or three 1/8" or 3/16" stainless steel welding rods through the door sides and the Kaowool so that they punch through all the folds and keep them from popping out.
If your door is curved or spherical, then you can hold the Kaowool in with SS wires through the door. Or use Plistix or ITC-100 or other refractory plaster to rigidize it and "glue" it in place. Mechanical fastenings are really the best however, due to expansion and contraction with heating cycles.