The Wise Man's fire drill.

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Feb 7, 2010
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It's been a very long time since I played with the primitive skills I once spent so long learning. The recent discovery of this forum has really brought the interest back and I look forward to contributing further.

Some recent threads on making a fire with the Bow/Drill technique started a bit of talk on the matter and I thought I'd take the time to do a write-up on what some call a "cheater" drill adapter that makes the job so much easier.

First, though, let me expound on that whole 'cheating' concept. To call it such kinda wraps me the wrong way because I do not believe there can be anything even close to cheating when it comes to surviving. You do everything you can to stay safe and keep breathing, period. Some will cry, "Oh, but the indians didn't use that cheating contraption!!!" To which I would ask, how do you know? Just because we haven't found it in the archeological record doesn't mean it was never used. Furthermore, one would be wise to remember that primitive cultures dropped stone tools like hot rocks when more advanced technologies became prevalent. The worst shard from a cast-iron skillet is head and shoulders above a stone chip for cutting and stabbing.

So, please don't think of it as not being "pure". If anything it's an extension of the mindset and provides you with a half-dozen skills to practice to make.

On to the tutorial, such as it is.

We start at the beginning. I am a huge fan of the Yucca flower shaft for drill material. The yucca cactus is used throughout the country as a decorative yard planting. Let the shaft dry on the plant. One shaft is long enough to make a ton of drill bits.

I wasn't driving more than five minutes before I came across a plant. That's my work truck in the back ground.

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The shaft has a pithy core similar to cattail, but it is more robust overall.

For the handpiece, I use a chunk of hickory. It's dense and glasses over really nice when used a few times. This glassy surface, combined with natural oils, cuts down on the friction between the drill and the handpiece. Less friction here means more energy transmitted to the other end, the working end!

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Because this is going out over the airwaves, so to speak, I chose to use my fancy bow for the demonstration. It's a cow's rib with a hardwood handle glued and pegged to the one end. This was then wrapped with cow rawhide and sewn with cow sinew. Something every upwardly-mobile woods walker should have!

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And finally, the last piece in the puzzle. Drumroll, please.....

This is the Wise Man's drill adapter/enhancer. It starts life as the rear lower leg bone of a deer. I use southern whitetail deer, but I'm sure that Mule Deer and others will work. I have not seen a similar morphology in other animals, though.

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You can see that one end has a permanently-secured hardwood tip that mates to the hardwood handpiece. No need to keep replacing one or the other as they will last for thousand and thousands of fires. I can't recall how long I've had this set up, but I can tell you it's going on twenty years of steady use and I haven't drilled any deeper into the hickory since it mated and glazed with the drill's top.

Cut the knuckles off each end of the bone and you're left with something that looks like this.

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You can see that you'll have some ridges to sand down to accentuate the square cross-section. There isn't a lot of work, but if you happen to start with a dried bone, not a fresh one, you can soak it in water for a few days and it will soften right up. A few minutes with a rock and you have a very square tube of calcium.

You really don't have to get anal with it and make it super square, but you can if you want. It will sure look pretty.

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Once you have it shaped to your heart's desire, you need to cut a hardwood tip with a tenon that fits down into the bone. This is then glued in place.

Both ends of the bone are wrapped with wet rawhide and then covered with a bit of glue to prevent moisture from getting back into the now-dried skin thong. Not entirely necessary, but a nice touch. The wrapping prevents the bone from splitting, which it will want to do, but you can use cord and pitch glue. I suggest staying with natural materials because it's the cool thing to do, but you could make something out of epoxy if you have to.

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And the biggest reason for using the wise man's drill ------>

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That's about an inch and a half of working drill bit! That's right folks.

With the standard drill bit, you have to find a straight piece that's at least four inches long. Longer is better, but that means you'll probably need to whittle it to a straight-ish shape. And the, once you've got it good and broken in, it becomes too short to use after a few fires.

Because the bone adapter has squared corners, it really grabs the string of your bow - never rounding off or slipping due to a lack of friction.

Because the bone is a larger diameter than the drill bit, the bit will turn more revolutions than the bone does, just like the handle of a screwdriver in relation to the bit of the driver. That means more of your energy is going to the bit and smoke verily jumps from the hearth.

And just to show how fast this is, I made a video. One minute from start to fire, and that would have been shorter if I had had a bit more meat in the hearth board. Anyone know where I can host 324mb of video? It's pretty dang cool, if I do say so myself.

That's it, folks. I hope you enjoyed the read as much as I enjoyed getting back into the game. Stay tuned for more.......
 
Nice work! :thumbup:

Spindle extensions and plugs are a great means when wood is scarce.

The great thing about the bone is the angular shape which aids in spinning.
There's a variety of methods for producing and joining 'plugs' when you start to explore the resources!

Another method for fixing the plug is with a piece of thin leather or buckskin. Simply place around the inserted plug part and jam into the bone. This helps when fit is imperfect...


Also works for Hand drills... In fact those having trouble with hand drill find it helpful as it acts as an added weight, like with pump drills...
 
I have always liked that design and the variations of it. If you intend to carry a primitive kit, the plug is the way to go. Just be sure that you keep up your foraging skills and don't get tied down to only a few types of wood. Having the spindle larger than the plug creates better torque... but is slows the rpms in the process. Some take it in the other direction and make the body of the spindle smaller in dia to increase the speed. What ever works for you, I say.


Great post VaughnT.


Rick
 
Cool set up! I want to make one just for the artsy/craftsy show-off side of me. Thankss I'll gather up some things then I may need to get more info from you.
 
Thanks for posting that. I am going to make a spindle like that. I know of a fresh killed deer and will get me a leg bone from it.

Bryan
 
Having the spindle larger than the plug creates better torque... but is slows the rpms in the process. Some take it in the other direction and make the body of the spindle smaller in dia to increase the speed.

Magnussen, I beg to differ. With the yucca flower shaft smaller than the bone, you are actually making it turn faster, more RPMs, than the bone per foot of bow travel. Making the drill bit larger than the bone would slow down how fast the working bit turns and spread the energy applied over a greater surface area.

Mistwalker, drop me a pm with your email and I'll forward you that video I shot. I think you'll like how fast the smoke started pouring out. If I counted right, I had smoke in 20 seconds and a workable coal in 40 seconds. Flaming cedar bark in around a minute!
 
Vaugn thanks for sharing that info. Really nice kit by the way. Always a pleasure to see someone doing things in a fresh and different way.
 
Thanks, all. I appreciate the kind words.

How do I follow this up, I don't know. But I am thinking...
 
Great setup! I can just imagine an experienced and well-to-do caveman with that rig, especially the bow. Art and working tool in one!

I certainly agree about the 'cheating' bit as well; of course they would use whatever method they could find to make life easier! Carrying the most efficient tools they could makes perfect sense. Their lives depended on those tools.

Magnussen is correct about the rpm and torque though. He said what I was thinking. You can't make the tip turn at a different rpm than the shaft it's fixed to, screwdrivers included. Having the larger force-interface on the wider shaft means more torque to the narrow bit, so you can bear down harder without it baulking, for more friction.
 
I really like this set up for hand drills. I use bamboo since it is easy to find and already hollow, and relatively straight. Then I sandwich that little coal creating piece of wood that comes in every size and thickness but straight and narrow, and put a plug at the bottom. I know I have a picture here somewhere!
 
Foxy, Magnussen, my apologies. I did some researching and reading, and you guys had it right. What was I thinking???

Doc, yup, my last name ends in "k". Begins with a "t", too. Have we met? :)

I think I'm going to try and get a shaft out of antler. That would be very cool, especially if I can do a really, really deep scrimshaw on it that won't wear down too quickly.

Bamboo? I just happen to have a grove of huge stuff on the homestead. I wonder how soon it would round off under the string's friction?
 
Ahhhh.... no worries VaughnT.... atleast I know I'm not insane.... lol...

I'll post my scribblings anyway....


Magnussen, I beg to differ. With the yucca flower shaft smaller than the bone, you are actually making it turn faster, more RPMs, than the bone per foot of bow travel. Making the drill bit larger than the bone would slow down how fast the working bit turns and spread the energy applied over a greater surface area.


A smaller diameter spindle will make more complete rotations within the same length of bowstring.

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Magnussen is right. With the bigger shaft you get more torque, but fewer rpm's per "bow". Doesn't matter though, just keep the bow moving! The squared-off bone shaft looks great. I've never seen that before--love it.

Thanks Vaughn!
 
Neat concept! I'm a little bit confused by the squaring off of the bone. Won't that create some rattle during the drilling? I know you are supposed to use a hexagonal shape for bit rather than completely round, but I often end up trimming the corners to make the drilling a bit smoother.

I actually don't really mind making the drill. I find it rather relaxing, but if you get wobbles and curves in your drill it won't work. This kit solves that and that is where I think the concept has a lot of merit. The thing I hate making the most is the headpiece block. That and the bow string are what I prefer to carry for my bowdrill kit and they take up very little room.
 
KGD, it would seem like there should be a lot of bobbling as the squared bone spins, but there isn't. Keep in mind that the bone has a natural taper to is, so the largest and most square section is actually where the bit is and is wrapped in rawhide. Because of the gradual taper, the bone becomes more cylindrical towards the hardwood tip at top. You could grind it to a full square, but I like the transition because it allows me to adjust the grip of the string by running the bow up or down.

If the bone wall is thick enough, you would add more facets, but that's more work for no real gain. The drill spins smooth and steady as is, though you'll feel and hear the "whop, whop, whop" as the string slaps down on the flats! It's cool.

As for making the drill, yea it's fun and relaxing to whittle on a piece of wood. But, you're going through a lot of work that you don't have to. With a short bit in a permanent holder, you only need 2" of bit and that's easy to find already straight. All you have to do is whittle a bit of taper on one end so it sits straight with the bone shaft and you're ready to go for smoke.

Remember, we're looking at a making fire because you need fire, not because you want one and want to try an old way of doing it. If a bone adapter can get you a fire easier... Of course, I always carry a lighter in the woods, so....

Were I to carry this gear for a real trip, I grab a waxed-rawhide pouch and fill it with the bone adapter, 8" of drill bit material, hearthboard, handpiece and dried tinder. Once that first fire was going, I would use it to dry out some more tinder to replace what I used out of the kit.

I can make a bow out of just about any limb, and I can even make a hand-piece from two small branches tied together, but that drill and hearth are the two key ingredients. That's why I don't rely on finding the necessary woods while I'm walking. You don't relying on finding a bic lighter while hiking....
 
Neat concept! I'm a little bit confused by the squaring off of the bone. Won't that create some rattle during the drilling?


Ken... Allan Beauchamp squares off his splindles, too..... it goes a long way in minimizing slippage.:thumbup: The string suspension of the bow sucks up most of the vibration.
 
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