In response to the question "what separates a good from a not good firesteel" I think that the answer is something like what's a good knife vs. a bad knife - the answer being a good knife is the one you have right now, and a bad knife is the one you forgot back home.
The basic principle of the firesteel is a durable, reliable source of hot sparks. The reason you carry a firesteel is that unlike matches and lighters you don't fear water with one, and you don't worry about keeping it supplied with fuel (like a zippo), or having it fail in extreme cold (like a Bic lighter).
In that context, a fire-steel - any fire steel, even a competing product to my Magfire line, is a Good Idea.
However, like any product, once you have the basic idea, there's issues that arise.
It has been mentioned here that the Magnesium blocks with embedded striker have had occasion to have the striker fall out. This has been my experience only with the Coglans, not the Doan models, by the way. Doan is a good product. So, you want a striker that stays put.
Then there's the matter of form. The block of metal approach is a bit of a "brute-force" method for the fire with metal game, and if you are trying to save space and weight, it's not the best way to go.
So we end up with the BSA "Hot Spark" the Swedish Firesteel and other rod with a handle styles.
First of all, we can look to the smaller, thinner rods and discount them immediately, as any amount of practice with them - and like all survival tools, the time to use them isn't when you have a broken ankle 175 yards from the road and it's getting dark and starting to rain - weakens them to the point that when you actually need to use them, they break. This is my gripe with the BSA hot spark and similar products with a 3/16" rod.
So once you're into 1/4" and greater diameter rods, you're into the world of tool, not toy.
In this class, you're looking at more than just the ability to spark, you need to consider other factors:
- Corrosion resistance
This one is easy. With a few exeptions (like for Gold) all metals will oxidize to some extend. Some metals, like Aluminium, will oxidize to form a hard, protective coating (Aluminum Oxide) that actually protects the metal. Others - like mild steel - actually suffer structural change and damage from the oxidation process - rust. Magnesium is a water-reactive metal, and does oxidize, however, like aluminum, the oxidation makes a coating on the metal. That's good and bad - you scrape the fire steel, you now oxidize the metal where you scraped - and next time you have to scrape off the oxidation to get a spark. Do that enough and you're scraping away good fire starting material with out startign a fire. So you want an alloy of Magnesium and other metals that gives you the fire you want without the oxidation you don't.
- Self-Ignition Risk
While a small risk with the rod-style sparking system, there is a chance that you could spark things just so and light your sparking rod. A 5,000 degree blob of burning metal is impressive to look at, but tends to be a problem when all you wanted was to warm your feet.
- Self-Ignition Damage
On a smaller scale, pitting and scoring from self-ignition of the rod is a matter of metal design. You don't want a rod that allows sparks to burn into the rod more than a tiny bit, otherwise you end up with a rod that is as strong as swiss cheese.
- Metal Strength at Reduced Diameter
This one is important. If you buy a fire steel, you better practice with it. And as you get to 50% reduction in diameter, your fire steel had better hold up and not snap in half. This is my complaint with the 3/16" rods. By the time you get good at it, it's ready to break. The alloy must be very, very strong. Pure magnesium is strong, but can be worn down quickly, because it's soft.
- Wear Pattern Effects
The entire rod - in and out - needs to be a striking material. You don't want a rod that's only coated with a striking surface. You don't want a rod that won't strike when it's half worn out.
That said, of course, my product line meets all of the requirements, and then some.
Here's a few other things you might like to know about making fire in the field:
- No toxic mess when you use a firesteel and natural tinder.
Did you notice that Trioxane tabs are flooding the surplus market? That's because the residue from a Trioxane tab is horribly toxic.
These fuel tabs contain metaformaldehyde which is toxic and releases formaldehyde gas (also toxic) when it decomposes. This fuel is toxic despite the many websites that claim theirs are "nontoxic". You shouldn't eat without first washing your hands after handling this fuel and the fumes aren't much fun either. Esbit and similar fuels - Hexamethylenetetramine - release formaldehyde, ammonia, carbon oxides, hydrogen cyanide and nitrogen oxides when burned.
Finally, when picking a fire steel, go with what people who have used them tell you. I can't knock a product made by another company if it works. All I'm saying is that for me, my products work, I like them, I used them before I sold them, and I'll only sell something that I think is the best of the best.
I hope that gave you some better information, and if you have any more questions, please let me know.
Marty
sales@magfireusa.com
www.magfireusa.com
Sole US Importer and Seller of the Magfire Fire Starter.