In this episode we sit down with Bob Hill; knife maker, kydex maker, and owner of Bob Hill Blades. He's going to share with us the basics of knife making, how to work with Kydex, and a host of other maker topics.
~ Knife Making and Kydex Making Topics Discussed:
* How does someone start learning to make knives? * How much tooling up does it take to get into knife making? * How do you determine what angle to put on a knife and does the metal play any part in it? * How long does it take to become proficient at knife making? * Why has Kydex almost replaced leather for holsters and knife sheathes? * What tools would they need for Kydex sheath and holster making? * How expensive is it for a hobbyist to get started making things in Kydex? * Besides holsters and knife sheathes, what else can you make out of Kydex?
~ Quick Takeaways from this Knife Making and Kydex Making Episode:
*// What's the best way for someone to learn knife making?
What I would suggest to a lot of folks... a number of the supply companies... professional companies where they host grind-ins or hammer-ins... there're clubs that hosts those... a buddy of mine Mike Stewart, he owns Bark River Knives... he hosts three grind-ins a year. And you can go in and see the full process of how they make a knife. And you actually go in and you make a knife. You do as little or as much as you want.
*// What's the learning curve on making a knife?
The people I've had come here to my shop to learn how to make a knife [...] to really achieve what they have in their mind, it can take a few blades. But the actual getting something functional, might not be pretty, but it'll get the job done, not that bad. I'd say one weekend. [...] That includes some of the metallurgy as well.
*// How much tooling up does it take to make knives?
You can make a knife with just files. [...] Action filing. You're using files to a fairly high tolerance. Like thousands of an inch. [...] I filed out a small drop point hunter on a Saturday.
[For the beginner] forging, I'm a big fan of the gas air forge. [...] You can build your own for about fifty to sixty dollars. [...] You need to have a good anvil and a good base. Then you're going to buy a ton of hammers. [...] You'll evolve into it. [...] But if someone wants to do hobby where they do stock removal, really you could get away with [...] you need some kind of belt grinder to be able to remove material and be able to shape the knife... grind the bevels. Basically take away all the material that isn't the knife. [...] You'll use that on everything whether you're doing Kydex, or leather sheathes... you'll use that to sharpen the knife if you have a good variable speed one and the appropriate belts. It's the tool that you use the most. [...] I would be looking at the 2 inch by 72 inch belts; they're the standard. They're a bit more expensive, but if you're really really wanting to throw down into it. [...]
*// Where does forging come in?
Forging is nice if you want to be efficient with the materials. [...] It can also be very helpful if you know what you're doing with the heat treating to actually refine the grain structure. [...] They'll anneal out any of the grain structure that they create into it. [...] It ends up being as if it was a homogeneous piece of steel. [...] With forging, you can really go fast getting the material shaped...
*// In layman's terms, why does the grain structure of a knife matter?
They're not even going to see it. That's going to be the polish and the finish. [...] I'll make word carving chisels for people that have to have a degree of spring. The way that I'm doing those, I want the grain structure to be a certain way so they'll be strong when they're flexing. [...] It's like that last 5% of performance they're trying to get out of it.
*// How important is blade geometry?
The overall geometry is probably the most important aspect of it [knives]. [...] The basics of the edges where you have hollow grind or a concave grind [...] i