Introduction: How to Hone a Knife

Picture of How to Hone a Knife

In this instructable you will learn how to hone a knife so it has a razor sharp edge. Warning when using a knife this sharp be extra careful because you could lose a finger or cut yourself so bad that you bleed to death!

Step 1: Use Rough Fileing or a Whetstone

Picture of Use Rough Fileing or a Whetstone

In this step you are going to bring the angle of the cutting edge to about 10 degrees because the angle of a factory sharpened blade is crap. The new angle should be about 1/4 or more inches long. A whetstone does a nicer job but i used a file when i did this.(See picture.)

Step 2: Rough Sanding and Fine Sanding (For People Who Used a File)

Picture of Rough Sanding and Fine Sanding (For People Who Used a File)

Find a block of wood and rap the sandpaper around it to give it a flat surface and sand in the direction of the grain of the steel. (Go in one direction not back and forth.) When you start use medium grade sandpaper and then work your way to super fine. Use this info at the bottom to help with the grit you will need. (Bad pic I will get a new one soon.)

600 grit to start.
Then slowly work your way down till you get to 1500 grit.

Step 3: Finishing It Off

Picture of Finishing It Off

Find a strip of leather like shoe leather and put some sharpening oil on it and rub the blade on it going in one direction (same as sandpaper) the leather should be on a flat surface. Hold the blade at the same angle that you filed the edge and do this for as long as you have Patience . (if there are burrs on the edge than you did it to much)

Step 4: Cutting Vids

Picture of Cutting Vids

Some fun I had. Click on the links to watch (Each bundle is 1/2 inch thick)

Cut 1

Cut 2


Bright Shadow (author)2007-10-11

that looks like a homemade knife... (other than the "saw" part of it) is it?

The "saw" part is called a serrated edge. I believe it is used to cause more damage in the stab.


Pat Sowers (author)Bright Shadow2007-10-12

i made the serrated edge useing diferent sized metal files.

That is some good craftsmanship. It looks professional.


curious youth (author)Pat Sowers2012-04-25

i know these comments are extremely old. but could you post an instructable on how you made the serrated edge ? i would love to see that done.

I couldn't care less what you were asking. I was telling you the name of the serrated edge.

okay......... btw.. are you some sort of fighting/blade expert?

Not really fighting. I do study blades and the like sometimes. Sorry for the rude comment. I was ticked at somebody at the time.

dude the serrated edge is to help cut stuf not to cause more damage in the stab

Pat Sowers (author)Nick Larson2008-02-05

but it does do more damage in a stab if you stab someone.

Nick Larson (author)Pat Sowers2008-02-05

ya but y would you stab any one in the first place i mean even for protecton u woulden't want to urt the person to badle just enough so they can't harm u

It is for no such thing...

If you are going to tell me wrong, please have the balls to explain. If it is not for that, explain what it IS for, instead of saying, "You are wrong," and leaving it at that.

Knives today are not made with killing in mind. The serations are a utility meant to help in cutting twine or other tough packaging that can't just be sliced. This is not the middle ages. Killing is not a large market.

Thank you, sir. And I have an authentic Marine Combat knife with a serrated part. I believe COMBAT knives were made for COMBAT and killing in mind. This is where I got the idea.

Well now that I know where you got such an idea I can say for sure now. A marines knife is made for more than just killing. A soldier needs to survive in adverse conditions. Let's say he/she gets lost in the woods and night is coming quickly. The soldier needs to build a shelter. A serrated knife is a very good tool for this. The marines have the greatest firearms training anyone could have. The rifle will always be their main weapon. Knife training however is minimal at best. One last thing. I highly doubt your knife is an "authentic marine combat knife" as you say. If this point was stressed when you bought it then it is most likely fake.

I see. I see. I'm only 13, so I have no clue about the world outside of Kentucky/Ohio/Indiana. Actually, this knife was given to me by my Uncle Bob (seriously, Uncle Bob) who was in the Marines for a time. He never explained anything, but meh.

One THOSE uncles huh?

Seriously. Everyone has an Uncle Bob.

I didn't. I had a step grandpa Larry. No joke. He gave me my first bottle of gunpowder.


A Marine's mind is his primary weapon. Serrations are good for cutting line ('rope' etc) and for other tool-ish uses.

 Indeed.  A marine's primary weapon is his (or her's) mind, and their hands used as tools as well as weapons. Weapons as hands, that sort of thing.

Speedmite (author)Aburame Shino2009-06-18

I made a post and then deleted it. I thought might cry if you read it.

dyermaker8 (author)Aburame Shino2009-09-30

I know this is an older post ,. but I wanted to clear something up. The serrated edge is a feature meant to ensure you always have a sharp cutting edge available even when the straight blade has been dulled. The points of the serration take the abuse while protecting the semi-circular edges between them. I seem to recall serrated edges initially found popularity in steak houses where they were used by patrons to cut their cheap steaks without the proprietors having to constantly resharpen them(still popular for that purpose today). That being said, for any purpose under the sun(be it cutting wood, rope, or flesh) I'll take a sharp straight blade any day. Peace.

outtokill (author)Aburame Shino2009-03-27

dude you are stupid thats not what its ment for and any ways your only 13 what the hell do u kno about killing

Pat Sowers (author)outtokill2009-03-27

no need to get angry over this now is there? cut em some slack dude look at the words "i believe" doesnt meen you have to take it as a fact its just an opinion.

curvy77 (author)2011-11-01

very intresting.... never thought about using a file or sabd paper. then again i prefer the more athentic way with a whetstone. your opinion, whitch better file or stone?

Pat Sowers (author)2008-02-05

i do and i ended it without violence because i am old enough to know how.

Benjicg (author)Pat Sowers2010-12-18

always the best way, that or if they resort to violence then take every hit they throw before askin if they're done.
(worked for me when some dude, before explaining why, started beating the living crap outta me, once he stopped i asked him why he was doing it, to which he explained before apologising :D)
if it resorts to armed fighting then its always best to disable them, self-defence does not cover killing your opponent, quick kicks or punches to weak points such as groin, stomach and face (specifically nose, jaw and ears) can be just as effective as breaking a bone
you know, just in case you get in a fight with a dude wielding a knife XD

XI3 (author)Pat Sowers2008-02-07

wow some people are real...jerks...(didnt want to be removed) huh pat. that dude just logged on and started talking smack. nick what is your problem, people like you should be removed from instructables completly.

Pat Sowers (author)XI32008-02-07

LOL they should!

Pat Sowers (author)2010-04-07


lobo_pal (author)2009-01-30

Why is Patience capitalized?

Pat Sowers (author)lobo_pal2009-01-31

because its important?

p_dostie (author)Pat Sowers2010-03-18

becaues it's a name.

danlab (author)2009-11-22

Just a note, stropping the blade (rubbing it against the leather) with plain leather will do virtually nothing. Normally there is supposed to be a fine abrasive paste rubbed into the leather first; this fine coat of abrasives is what actually removes/shapes microscopic amounts of metal.

Pat Sowers (author)2008-02-05

Thats funny man! One you dont look 15 and two like hell you could! ROTMFFLMGDMFAOSHIJAD!!!!!!!!!!!!!

Nick Larson (author)Pat Sowers2008-02-05

what do u bench like the bar?

Pat Sowers (author)Nick Larson2008-02-05

230lb with a 20 lb bar

someone needs a regulation bar.

got the bar feom school

lobo_pal (author)2009-01-30

What are you cutting?

Pat Sowers (author)lobo_pal2009-01-31

they are dryed out 1/4 inch oak branches

Hitman7594 (author)2008-12-16

what do you use as the oil?

Pat Sowers (author)Hitman75942008-12-16

ive been using "3-in-ONE" oil. it workes quite well

cnbeseen (author)2008-10-13

To test if a knife is "Truly" sharp is if you can shave with it (without cutting your own throat). However, it seems to me that many of those commenting here would not be old enough to shave!

Pat Sowers (author)cnbeseen2008-10-14

hahah i use it to shave every morning. keep my chinstrap beard looking nice. lol

About This Instructable




Bio: Im 17 years old. I love to build things, mainly weaponry and planes. I like hard core music and im on instructables just about every ... More »
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