I've been playing with mine a little bit but haven't gotten confident enough to run a full batch through it.
I've watched a ton of videos that say you need to destroy a piece just to know what that does. Then set it up by using it in a dark room and watching for color change. Like you said, I've heard tempilaq can discolor due to flame, where there on the outside of the case or the inside.
The only tempilaq I can really see being useful is the 400 painted down on the case to make sure heat hasn't traveled that far down.
I've watched a ton of videos that say you need to destroy a piece just to know what that does. Then set it up by using it in a dark room and watching for color change. Like you said, I've heard tempilaq can discolor due to flame, where there on the outside of the case or the inside.
The only tempilaq I can really see being useful is the 400 painted down on the case to make sure heat hasn't traveled that far down.