Please tell me how do you cut the magesium bar in half. I have the 2 in bar but not sure if its safe to saw it with a hacksaw.

Just cut with a Dremel tool but I would think a hack saw or anything similar would work. There was no problem EXCEPT when I got to the flint. Then I had sparks. But they will not ignite the bar. I have cut 3 bars in half and no problem other than the sparks when I hit the flint.<br>

Actually the vaseline coat on the shavings makes it harder to ignite the shavings. The boost in the ignition won´t help to much as the cotton is pretty easy to ignite and it keeps the hot flame away from the material that is hard to ignite plus the distribution of the shavings takes away most of the intensity of the flame.

I cut my cylindrical magnesium bar in two. I was cautious with a hacksaw, cutting slowly. The bar can't burn under normal conditions, but the dust can. I cut on a breezy day, which blew the dust away from me, and had no problems. Just keep the dust dispersed and you should be okay, but be ready to jump back instantly.