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Lawnmower Blade Machete with Cherry Handle

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Project by Kevin posted 785 days ago 4074 views 11 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 rout a whole bunch





19 comments so far

View grizzman's profile

grizzman

6764 posts in 1899 days


#1 posted 785 days ago

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

TedM

2002 posts in 2328 days


#2 posted 785 days ago

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 http://www.woodworkersguide.com and sign up for my project updates!

View woodshaver's profile (online now)

woodshaver

2730 posts in 1948 days


#3 posted 785 days ago

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!

-- Tony C , My high school shop teacher said "You can do it"... Now I can't stop!

View Kevin's profile

Kevin

539 posts in 894 days


#4 posted 785 days ago

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 rout a whole bunch

View Ryan's profile

Ryan

38 posts in 879 days


#5 posted 785 days ago

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

Kevin

539 posts in 894 days


#6 posted 785 days ago

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 rout a whole bunch

View Bobmedic's profile

Bobmedic

302 posts in 1397 days


#7 posted 784 days ago

Slingblade, LOL looks great

-- Save lives, ease suffering, reduce morbidity and mortality, stomp out pestilence and disease, postpone the inevitable, and fake compassion. The Paramedics Creed

View Monty Queen's profile

Monty Queen

1578 posts in 1847 days


#8 posted 784 days ago

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

mdmccat

19 posts in 1281 days


#9 posted 784 days ago

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

View Terry's profile

Terry

9 posts in 787 days


#10 posted 784 days ago

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

Kevin

539 posts in 894 days


#11 posted 784 days ago

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 rout a whole bunch

View Danpaddles's profile

Danpaddles

534 posts in 907 days


#12 posted 784 days ago

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

Kevin

539 posts in 894 days


#13 posted 784 days ago

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

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

View Danpaddles's profile

Danpaddles

534 posts in 907 days


#14 posted 784 days ago

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

drbyte

553 posts in 2657 days


#15 posted 784 days ago

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

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