Creating a bush knife with layered wood handle

This documents the process of creating a 'bush knife' from scrap steel and wood, to the finished product. The aim was to produce a useful tool for one of my favourite pass-times, wild camping. It was designed to meet the following criteria:

Be light enough to be carried as part of my regular kit, replacing my heavy hand axe.

Be sturdy enough to take a bit of abuse, using it to split small logs, function as an improvised hammer etc

Be something that looks like I can be reasonably proud of making it.

Fit my hand perfectly, I don't like blisters.

Have a tip delicate enough to do a bit of wood carving

Hold a sharp edge




I deplore the prospect of knives as weapons, if you have any comments along those lines, please keep them to yourself, I don't want to know.

Asides from that, I'd love to know your thoughts. This is my first attempt at such a project and I have likely missed a few vital steps.

Step 1 Materials and tools

Materials
Steel, at least 3mm thick.
Wood, a couple of different kinds, I used pine and redwood
Threaded rod and nut, for fixing the handle in place

Tools
You can probably get away with less powertools than I used, so I'll list them in order of importance

MIG welder
Bandsaw
Grinder
Vice
Pillar Drill
Hacksaw
Disk sander

Others
Wood Glue
Anti-rust primer
Polishing wax
Sandpaper/Glasspaper
Cloths and rags

Comments

[shadow wave rider]

how long is the blade

[Belzebebpr]

Looks GREAT, I don't have ANY of the tools needed, but would love to try this. And the colors of the wood look great once treated. I really look forward to trying this. Keep it up.

[spylock]

I made my first blade with a hacksaw ,a file,a drill,useing the blade from an edger,it dont take a whole lot,just the desire,give it a shot,youll be better for it.

[sculptur]

is the edger blade made of high carbon steal or just cheep stuff

[dawsonj]

sweet!

[cowscankill]

Where can I get the steel though? :/
Neither of my hardware stores have any...

[punkhead58]

I believe this project used with scrap metal, as do all of mine.

However, if you insist on buying metal, I suggest www.onlinemetals.com/

[cowscankill]

 Thanks for the link!

[weloveclover]

Having made a few knives myself I highly recommend that you DO NOT use an angle grinder to put in the edge as it leaves dents which take for ever to file out.

[punkhead58]

I agree. Trying to do precision work with an angle grinder is like a bull in a china shop. Although you can get relatively accurate results with a bench grinder, I recommend taking the time to use the good ol'e steel file.

[punkhead58]

lol cud u liek kil sum1 wit dis???!!1

*Don't fret, my friend, I was only kidding.*

Anyway, I've just finished the blade for my dagger-style Bowie knife. It has a full tang, and I was exploring different handle designs. I like the looks of the layered wood handle, however, ergonomics is my primary concern since I intend on wrapping the handle in paracord for increased comfort.

[profpat]

 very well explained, very good instructable, here in the Philippines, we use scrap leaf springs from old vehicles, may require oxy-acetylene cutting, but the forming of the blade is pretty much the same as what you presented..this is great... 

[spylock]

It looks to be a pretty nice blade,Im making a bowie,8'' blade and will be 13'' overall,I will be useing brass for my blade gaurd and pommel ,walnut,on the outsides and stag in the middle with 7 brass pins and a little E-6000 for extra support on the handle,though I dont think Ill need it.I think for your first attempt,its a hellova good job and the quality only goes up with the number of knives you make,keep it up.

[nickweaver77]

i came up upon this and this is really cool. i have a dad that's a machinest and i was already making a blade out of o1 steel. im going with this now to make it a little better.

[peterlonz]

Depending upon the steel chosen its highly likely that a competent welder would have difficulty in executing a decent weld. The welding rod has to be selected for compatibility with the blade steel & needs to stay tough enough for knife duty after the whole welded joint has been heat treated. I'd be very reluctant to suggest such an approach unless you have proven the technique in practice & can offer specifics to achieve a suitable weld.

[42ndOddity]

Nope, no chance, I am not a trained welder, but I am happy with the weld, it's tolerated some abuse and not shown any signs of weakness yet. If you look at the length of the tang you will see the tang-rod weld is very close to the butt of the handle, so there is very little stress at that point as it's protected by the stiff handle. Perhaps it helps that I used a MIG welder which heats quite a specific area, rather than a stick welder which heats up the whole lot. If you want instructions on tempering the blade then look elsewhere, this is just an instructable for making a nice handle.

[skimmo]

i agree i think on a project this small i dont think the weilded bolt isnt going to make much of a difference, its not like your banging it onto stuff and sword fighting with it, its just holding the wood on the end. and the main problems you have with weilding swords is vibration

[thyyt1]

what???

[MoreBeef]

Nice first effort. I would make a suggestion to help future attempts and perhaps even improving the current tool. Buy the book "$50 Dollar Knife Shop" by Wayne Goddard. It's not expensive at all and will make your knife projects so much better. Has details on how to construct a single brick forge, as well as how to make a (scrapyard) coal forge. Everything is done on the cheap with found objects/rummage sales/thrift stores/ etc. The chapter on heat treating would be especially useful to you.

[diocite]

A nice looking knife. What type of steel was the blade made from? It may not hold an edge as well as you would like because certain steels are not as heat treatable as others. I usually use O1 tool steel which is readily available and relatively cheap. Leaf springs from truck also work if you specifically wanted to make it from scrap. Also unless you heated the entire blade red hot all at the same time then your quench will not leave the blade evenly treated. I have had success with a charcoal chimney and natural wood charcoal (not briquetts). Bring everything to red hot, drop the blade into oil or HOT water, sand it till shiny, then heat slowly over the charcoal till the edge of the blade is yellow. Or alternately heat the blade from the back edge with a torch. -Diocite

[nunvikingsofthesea]

would a wood saw blade work?

[diocite]

Old hand saws were made from medium carbon steel. Somewhere in the range of .8%-1% with little in the way of alloying elements. O1 is .85%-.1% with a bit of manganese. Should work, but I think a saw blade would be too thin to make a knife of any significant length.

[nunvikingsofthesea]

well, wat do u think is a something good that i can convert into a bush knife, because there is no way i can find the steel, so i can't build it from scratch.

[Boy Scout]

You could use an old hacksaw blade.

[diocite]

Files, lawn mower blades, circular-saw blades, car leaf springs, garage door springs, springs of any kind, axles. Any steel that is temperable. Try flea markets and scrap yards. Yard sales even. You can test for temperability if you have a bench grinder. High carbon steel will throw a shower of really bright white sparks. Low carbon steel won't throw very many sparks and they should not be as bright. Compare the sparks of whatever you think might be high carbon to the sparks thrown by a common nail. - The preceeding paragraph was a rough summary of Chapter 2 of "The Complete Modern Blacksmith" by ALexander G. Weygers. I have not used this method and cannot promise that it will work for you. Also if you bring a section of steel up to red hot then quench it, if it is high carbon steel, it will get real hard. Take a file to it and if the file skates across the surface of the metal then it is temperable. This is a method I have had success with.

[nunvikingsofthesea]

Where could u get O1 tool steel?

[diocite]

McMaster-Carr is where I get mine. A2 also holds a good edge.

[milamber]

u can buy knife steal called 1095 from steal reatailers it holds an edge of up to RC 58 and is easy to heat treat to that point

[diocite]

Another heat treatable carbon steel. Primarily used for springs.

Hardness comparisons for various steels are here:
http://www.mcmaster.com/param/html/steel/default.htm

1095 is toward the center, left. A2 and O1 are way right (harder) and will hold a better edge.

[atombomb1945]

When talking about a Charcoal Chimney, would that be the chimnerias that people have in their back yards, or the ones that are used to start a gril?

[diocite]

I just use one that I would use to start the grill. I also use these to start my coal/charcoal forge (made from a large tractor brake drum). It makes starting the forge very quick.

[uncle_fester]

Diocite, if you havent already, it would be great to see a work up on your forge.

[diocite]

I am away from home for a while due to work. I will see what I can do when I get home.

[chunkymuggen]

i made a thing out of a charcoal chimney that heats the coals really hot; hot enough to reach about 1000 degrees. use an old charcoal chimney, and attach a heat resistant metal hose to the base. attach an air mattress filler-upper to the other end of the hose. the air keeps oxygen going to all parts of the coals, making them super hot. also, you could (if you know how) attach some kind of airflow regulator; either an electric one attached directly to the blower, or (easier) attach a hose flow nozzle to the pipe. either way would work. :)

[diocite]

I don't even bother with a blower, though I do have one on my forge. I just light up the chimney and let the charcoal catch.

[chunkymuggen]

well, it'll be a lot hotter with a blower, but the coals will run out faster. also, i think there are coals you can buy that burn extra hot.

[biolethal]

those coals that burn extra hot are A:toxic to the environment because they have a bunch of chemicals in them.(but then again burning charcoal isnt eco-freindly either) B:they are allot more spensive... biolethal

[icanryme2002]

wood is carbon neutral

[chunkymuggen]

yeah, but you can get a bunch for expensive. anyway, if you would rather buy a real forge for a couple hundred, thats alright. unless you're poor, i dont think the slightly raised price should be much of a blow to your wallet. anyhow, i would rather get my steel really hot and get it evenly heated so it gets maximum strength. about the environment thing, I'm not a tree-burning, paper-wasting, littering, plastic-burning, earth hater; i just think earth is fine. i will probably be dead before the enviornment changes too much, but i dont thing burning some chemically-enhanced coal will cause the earth to explode. no offense by the way.

[atombomb1945]

Ok, I will bite. Where do you get a "Real Forge" for only a couple hundred?