Lawnmower Blade Machete with Cherry Handle

  • Advertise with us
Project by Kevin posted 05-28-2012 05:32 PM 8988 views 12 times favorited 19 comments Add to Favorites Watch

I made the blade from an old 42 in. lawn mower blade. Shaping and cutting with a reciprocating saw and angle grinder. Finish grinding with a bench grinder. I added the serrations with the angle grinder. I didn’t heat and temper the blade just used it like it was, just made it for fun. Its definetly not perfect, and I know a few things that I would do different if I make another, but I had a good time making it. Its not very sharp, if I try to use it I’ll sharpen it with a file and a wet stone. Handle is a piece of Cherry that I resawed on the bandsaw. I have counter bored holes holding bolts and nuts into the handle. I might eventually replace the bolts with knife handle rivets but don’t want to buy any just for this. 1/4 in roundover on outside edges of handle. Finish on handle is BLO and mineral spirits. Thanks for looking.

-- Measure twice, cut once, then sand a whole bunch

19 comments so far

View grizzman's profile


7836 posts in 3476 days

#1 posted 05-28-2012 06:13 PM

great use of left overs, it looks like it will do some cutting…now i know what to do with my leftover blades

-- GRIZZMAN ...[''''']

View TedM's profile


2002 posts in 3905 days

#2 posted 05-28-2012 06:22 PM

Awesome! What are the things you would do differently?

btw, love the star shape of the shaft hole, adds a unique touch…

-- I'm a wood magician... I can turn fine lumber into firewood before your very eyes! - Please visit and sign up for my project updates!

View  woodshaver Tony C   's profile

woodshaver Tony C

6202 posts in 3526 days

#3 posted 05-28-2012 06:43 PM

Recycleing and thinking Green!
Now that what I call a cut above the rest! ..........because all the others are under the deck or in the scrap yard!

-- St Augustine FL, Experience is the sum of our mistakes!

View Kevin's profile


560 posts in 2472 days

#4 posted 05-28-2012 06:50 PM

Thanks grizzman Ted and woodshaver. I have been wanting to make this just been waiting till I had to change blades in the mower. I also like how the star shaft hole ended up in the middle of the blade. As for what I would do different… First I would take the extra time to get the blade cherry red so I could flatten it. Then after cutting the shape out I would get it hot again and quench it in oil for hardness, then temper it in the oven. I’ve never done that kind of work before so I didn’t know exactly what I would be getting myself into, I’m not even sure I have all the steps right, but from what I have read if you do it right you’d have a really good blade that could hold a nice edge for a while. I guess the only other thing is use regular knive handle rivits instead of bolts for a cleaner look. I feel like I kinda threw this together without taking the time to make all the little things just like I would want. But I guess for a lawn mower blade machete it still looks pretty good.

-- Measure twice, cut once, then sand a whole bunch

View Ryan's profile


38 posts in 2457 days

#5 posted 05-28-2012 07:24 PM

That’s awesome man! On my favorites list. This will definitely be one of my next projects! I love the serrations on the top!

-- If you want creative workers, give them enough time to play.

View Kevin's profile


560 posts in 2472 days

#6 posted 05-28-2012 07:26 PM

Thanks Ryan, wasn’t sure how I was going to make the serrations at first. Ended up just using the thickness of the wheel on the angle grinder for each cutout.

-- Measure twice, cut once, then sand a whole bunch

View Bobmedic's profile


381 posts in 2974 days

#7 posted 05-28-2012 10:38 PM

Slingblade, LOL looks great

View Monty Queen's profile

Monty Queen

1593 posts in 3424 days

#8 posted 05-28-2012 10:42 PM

Kevin, nice knife looks awesome. I have six of eight of those wore out blades laying around my house. I have a lot of sand where i live and i have to change out blades about every three of four cuts of my lawn. I might take one and save it for a project like that. Thanks for posting.

-- Monty Q, Columbia, South Carolina.

View mdmccat's profile


19 posts in 2858 days

#9 posted 05-29-2012 12:04 AM

I was trying to figure out how you cut that cool star, then doh! I got it. Cool blade.

View Terry's profile


9 posts in 2364 days

#10 posted 05-29-2012 01:44 AM

How about I send you up about 5 or 6 used blades and you can make me a couple haha. Great knife.

View Kevin's profile


560 posts in 2472 days

#11 posted 05-29-2012 03:15 AM

Thanks again everyone. It was a lot of fun to make, and all that your really out is the time to make it. My wife makes paracord bracelets so I’m thinking about having her make me a sheath out of paracord with some kind of plastic or nylon liner inside with a belt loop on the outside.

-- Measure twice, cut once, then sand a whole bunch

View Danpaddles's profile


573 posts in 2484 days

#12 posted 05-29-2012 12:52 PM

Cool! I love the look.

If you heat the blade next time, you can also hammer the edge down to save grinder time.

Drill your handle holes before you harden the blade. DAMHIKT.

On such a nice beefy blade, you could also aim to just harden the cutting edge. Concentrate on just heating the edge- it will heat faster because it will be thinner. Then, completely soak a rag with old crankcase oil, or even pour the oil onto a cookie sheet. (Do not tell your wife about this.) Then, when you have the cutting edge nice and red, just wipe/ run through the oil on the edge, but not on the whole blade, let the back part cool slow. The back of the blade will stay tough, but the edge will hold better.

Your cookies might taste funny though. You can use a file to get an idea of how hard your treatment may have turned out, if you done good, the file will mostly skip over the edge, if it is still soft, you will have more metal filings.

There is some argument for treating cryogenically. I figure, it is free and doesn’t need much effort, so why not try it. Toss the knife in your freezer for a while, when you are done treating it.

You would have the chance to make some nice curves on the handle, maybe a flare out at the butt, so it would fit your hand better. If you want to save the price of the fancy handle bolts, you can use brass rod and epoxy to hold the handle on.

-- Dan V. in Indy

View Kevin's profile


560 posts in 2472 days

#13 posted 05-29-2012 01:05 PM

Dan, thanks for the tips on heating the blade. Sounds like very good info.

-- Measure twice, cut once, then sand a whole bunch

View Danpaddles's profile


573 posts in 2484 days

#14 posted 05-29-2012 01:22 PM

Kevin, I just posted a project, a knife I handled a few years back, to give you an idea of one method of attaching the scales.

-- Dan V. in Indy

View drbyte's profile


815 posts in 4235 days

#15 posted 05-29-2012 02:54 PM

Looks good. I made one from an old power hacksaw blade years ago, somebody broke tip off but it’s still sharp! Looks like you’re ready for the Zombies!!

-- Dennis, WV

showing 1 through 15 of 19 comments

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics