Picture of how to make a knife from a old file
making a knife from a file. I will help teach you how to make your first knife:} for more on knife making go to http://www.m4040.com/Bladesmithing.htm

Step 1: Tools and suplies

Picture of tools and suplies
you will need a grinder or belt sander,a old file (files have a high carbon content perfect for a knife) wood blocks, glue, a sharpening stone, sandpaper, and yes a knife (not the one you are making)
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admin6 years ago
Hey, this is a great instructable and is very informative. Just one thing is missing... pictures! It really helps a lot when trying to follow directions so you should consider taking some photographs. Once you do that and leave me a message when you have so that we can publish your work. Thanks! Thanks for the cool instructable and we hope to publish this soon!
This is why I'm glad I have access to a milling machine and good ol' steel flat bar.
triumphman3 years ago
"Thats not a knife! Now here is a knife"! (Croc. Dundee )
triumphman3 years ago
I am making a big file knife tonight. The blade is12" long and has a tang of 3" . I have not decided on the handle material as of yet. I have maple oak birch and hickory in my wood stash. I have drilled the tang for two brass pins. I will post some pics. May even do an ible of it! Booyah!
jreed34 years ago
Alot of people sitting here talking about his process and such. Have any of you actually taken the time to go to his website and look? He makes freaking amazing knifes in all different manners. He is a great knife maker but per the usual everyone is to lazy to look. Fail on yall's part.
This. Is not. M40. Do you see ANY of his knives in that picture?
Mine will be up in a couple days, I'm making a full scale Rambo first blood part1 knife
i made this with a big file, and a 4 x 36 sander, a bucket of water, a regular knife grinding stone, and 80, 100, 220, 400 and 600 sand paper. http://dl.dropbox.com/u/83411/IMG_20110803_204846.jpg you can make amazing blades from files, if you know what you want to make out of it.
where did you get the big knife from. looks cool. are they all yours. nice instructables
stuwegie4 years ago
Thats not really a knife now is it, its the sharpened end of a file with some wood tied on as a handle.
Quite a poor instructable in my opinion.
you can improvise a knife out of practicallyanything, even a broken bottle, it depends on how fancy you want to be. certainly there are better knives available, but I like this concept for a very accesable first homemade knife
needs rivets there are no rivets
stAzer6 years ago
I had always thought you had to heat it to soften the file and then use a hack saw to cut out the pattern of your choice, then use a file to sharpen it before heating it up again and cooling it in oil to harden it again.
te term for the softening process is called annealing and dont forget the temper
my way of doing that:
lob file on fire;
shape knife;
make forge;
heat knife to red hot and put in oil;
temper knife with a blowtorch;
hone knife.
test knife
you can to tempon the steel but it is not for beginers
annealing it would make it EZer to work then harden then temper
Void Schism4 years ago
More detail on the steps taken to shape the blade would be good.
bombmaker25 years ago
I like the idea but that looks more like a homemade shank rather than a knife
Doddity5 years ago
Nice idea and all but you didnt do a lot of research on the subject which would have saved time and given a better result. There are a few ibles which have a better method that would have been helpful to look at.
zaarenoc5 years ago
I once made a knife from an old file and it would cut the edge right off of any other knife.  It took a lot of whetstoning to get it sharp but it would stay sharp for a looonnng time.
here is the pictures i was talking about!
Picture 154.jpg
nice instructable.  i recommend breaking the file in half and then putting it in a fire to anneal the steel. then use your grinder to shave the teeth off the file. then again use the grinder to shape the blade to your preferences, then grind it to a good angle! then put the blade in a vice and carve a handle for it. drill a hole to aid the next process in the handle and slowly hammer the back of the handle so the blade's tapered un-sharpened  end goes into the handle. then sharpen it with a whetstone! here is one i made yesterday out of an old file, and i used manzanita for the handle! it turned out great! it took about 2 hours from start to finish!
imakeknives5 years ago
i made a knife from a file but i made a hidden tang tanto with a traditional cord wrap...
awesome! i think i am going to do this sometime soon!
random pictures of knives? not the actual instructable?
you made a pison shank nice doses your mom lock you in with al the inmates

hary hary har
Shut Up Now5 years ago
wow, in step 3 i thought that block that you sawed was aluminum or something by the picture. i was thinking like "wow, this guy must have a lot of endurance to do that by hand..."
we sawed aluminium by hand back in metal shop, if you are using the right saw, and its sharp enough, it can cut through with ease.
wouldnt this be more of a dirk, since it is a knife-like object with no guard? B.T.W. this would be a good concealed carry if the blade was slightly longer nice ible ive been wanting to make a knife but dont have carbon steel on hand, and my files are dull man this is a run-on comment lol
i make mine from butter knives or even a pice of steel strip (home depo 10$ for a foot) will work
does home depo have any really thick(1/8"-1/4") steel strip?
i think so
I certainly agree with using the old files for working with, they are both cheap and have a high carbon content. you might find that they will be a lot easier to work with if you anneal the file first. this will both bleed some of the carbon from steel and make it more ductile. to anneal it heat the file/blade/steel to about 750 degrees C and allow to cool very slowly, the slower the better. once your done working the blade you can restore much of it's original hardness by tempering. this involves heating it and rapidly quenching.
inumaru6 years ago
i have the same knife as on the right on the bottom row, the black one.
ipwn (author) 6 years ago
i just made the knife in the last pic to show how to make it, balisongs are ilegal in canada
u can own one u just cant sell it or cary it
ipwn (author) 6 years ago
i just made the knife to show how to make it. and i used a grinder to make the knife so i do not need to soften it to shape it, and the steel is already hard
lmuli36 years ago
It's pretty small i prefere thebigg knife on the front page . If you know how to make it plz post it up
bigmama10796 years ago
It seems like you simply made this instructable to show off your (not too impressive) knife collection. Your instructions aren't very clear, and the lack of pictures didn't help either. It seems like a decent idea, but the execution is quite poor.
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