Taylor, It is a piece of artificial flint, for generating sparks by scraping it, to start a fire. Doc Ron referred to its elemental makeup in his post. I also recall, perhaps incorectly, seeing the compounds at
www.equipped.com.
Greg, I confess I have not used the BlastMatch except to practice with. I do not see how one could not like it though. It throws a hot, large spark. I figure if the gimmick fails, use the butt of your Battle Mistress
, rock, or something else to smash it open. Then just use the large piece of artificial flint that is inside. Pictures of it are on the above mentioned site. The artificial flint inside is 1/2" inch in diameter and just over 2.5 inches in length. It is somewhat heavy because of the size of the flint, but it will last a long time.
The only negative I can think of is that if I did not already have this large rod of artificial flint, I would have bought the one I recall Greg selling at his site.
Plus, I already had one from Ron. Sorry Greg...I'll have to get one later. I always have the sparker from Ron on my keychain. I'll post how I did this later if anyone is interested.
Does anyone know if the composition of artificial flints, such as the one Greg uses, varies enough to make a difference?
P.S. I went and looked later in the day. The composition of artificial flint can be found at
http://www.equipped.com./devices28.htm#Sparks
According to that page, these are the constituents: a mixture of metals and rare earth elements, by weight approximately 20% Iron (Fe) with trace amounts, less than 3% each, of Zinc (Zn) and Magnesium (Mg) and the remainder a combination of rare earth elements, 50% of which is Cerium (Ce), the remainder primarily Lanthanum (LLa) and Neodymium (Nd) and trace amounts of some other rare earth elements. An interesting fact mentioned there is that apparently any sharp edged scaper will work, even a glass fragment. (I use my Leatherman Wave file, if not using the Blast Match one-handed method.) This differs from natural flint which requires iron or steel...as also described there.
An animated demonstration of the BlastMatch and Spark-Lite can be found here:
http://www.equipped.com./firestrt.htm
I note that if you want to use the BlastMatch manually without the built in carbide scraper, the rod sticks out just over 1 3/4." For you nitpickers the actual amount on mine, if you pull it out fully is 1 13/16", which is a little less than the 1 7/8" mentioned on
www.equipped.com. That site mentioned some modifications to beef up the case so perhaps different models are being measured. Perhaps the case breaking is why Greg heard of some complaints, but even if the case breaks, it still works manually. From the pictures, it looks like I have the old model
, but
www.equipped.com mentions they are guaranteed, so with that and manual operation for emergencies, I won't worry.
[This message has been edited by Donald (edited 30 November 1999).]