I am an fire safety engineer trying to build a fire model which I could use to demonstrate basic fire behavior in enclosures. In general, the model is a box (for example 0,3*0,3*0,2 m or larger) with one opening. Inside the box is the burner (gas burner or some material which burns).
At the university, we always used models built out of gypsum plaster. It was cheap, easy to connect and it could resist quite high temperatures (around 700 degrees Celsius).
Is there any kind of transparent material which could be used in such an application? If I understand correctly, the highest temperature which thermoplastics could withstand are about 270 degrees Celsius. Quartz glass is too brittle I think, and probably too hard to cut out.
Is there a material like this? Or if there are multiple materials, which one(s) are least expensive?