Ernie,
One big difference in this particular example is it has to set for 30 minutes before it can be used. When I was a kid my uncle had a big gas generator for his welding and it used carbide which he got in 20 gallon cans. The carbide was in powder form. My cousin and I used to slip in and get a bunch of it and then put it in a bottle which used a cap, add some water, put the cap on, and wait about 2 to 3 minutes depending on how much we put in and we had some great explosions. Until we got to much in one and blew a hole in the side of his shop.
Ron
