The hacksaw blade might work better because it has sharper teeth. I just don't think it's a good idea to use a striker to light an alcohol stove. It's pretty easy to bump the stove and spill the alcohol all over. It the spark ignited it, you're in trouble. In my opinion, the best way to light a stove it with a match or to light a small twig or piece of dry grass with lighter, then touch it to the stove. The latter gives you a little more reach and prevents you from burning your fingers.