No, don't believe I heard of that kind of fire lay. 4,000f degrees sounds a bit hot, - with hunters stew, I hope one would like the added thickening flavor of melted dutch oven!
I'd like to see one in action. Didn't have any luck running "Swedish Alter Fire" at Google.
Good ideas with string, shower curtain holders.
Interesting to read some of my dad's old WWII Army Air Corp survival books. Quite a few ideas there, one being a monkey trap! HA.
Being new here, is this board html active?
Randy