I suspect they will work, perhaps only too well . One big difference between the regular fire pistons and the demonstration fire piston is where the “tinder” is placed. As you know from your own fire pistons, the tinder sits in a small depression at the end of the piston and can be easily dislodged into your fire bundle. With the demonstration fire piston, the tinder simply sits on the bottom of the barrel, I am fearful that the tinder fungus and/or char-cloth will catch and be near impossible to extinguish causing the bottom and lower sides to melt . Oh well, we’ll see soon enough .

Pete