Turning Saw Blades Into Throwing Stars

The holidays are nearly upon us, and if you haven’t found the perfect gift for the Mall Ninja in your life yet, this latest hack might be just what you’re looking for. On his YouTube channel, [The Nocturnal Alchemist] demonstrates how to make ninja throwing stars (shuriken) out of an old circular saw blade. One could probably argue that a circular saw itself is close enough to throwing star if your only goal is to wreck some stuff in your backyard, but with this method they’ll have that official samurai look.

To start the process, he hits both sides of the circular saw blade with a grinder to smooth out the surface. He then traces the desired star shapes onto the blade, and cuts the blade into pieces so it’s easier to manage. The rough shape of the stars is cut out with an angle grinder, and a belt sander lets him sharpen the edges.

At this point the stars are effectively finished, but if you want something that’s going to look good on the shelf next to the katana you bought online, you need to do some more finish work. He sands both sides of the stars by hand, starting at 80 grit and working all the way up to 1200 grit wet paper. Once sanded, paste wax is rubbed in with a cloth to give it a protective coating.

With the finish work done, all that’s left to do is throw your new shuriken at cans of soda and watermelons as a demonstration of their power. To this end, he has come prepared with a 1,000 FPS camera; so if you’ve ever wanted to see cans of off-brand soda getting exploded with a throwing star, your Mall Ninja friend isn’t the only one about to get a gift.

With circular saw blade shuriken completed, all you’ll need to do to complete your urban samurai transformation is forge yourself a sword, and perfect your run in virtual reality.


12 thoughts on “Turning Saw Blades Into Throwing Stars

    1. According to another internet, belt sanders are potentially dangerous on their own, wearing gloves makes them more dangerous. Throwing stars obviously present their own hazards, so as you say, the sander/star combination is bad enough, but how tempting would it be to just slip on a pair of gloves to save your fingers from the freshly sharpend and still hot star point, now we’re positively dicing with death as oposed to simply dicing our fingers.
      At least now I have a use for all those dull circular saw blades, just need to find a use for hundreds of feet of bandsaw blades.

  1. Yeah, 6 and 8 points look cool up on the wall. But they are inclined to walk if they hit anything other than a perpendicular obstacle. Gotta say 4 pointers for performance, they stick where you throw ’em. Yer supposed to throw them over yer shoulder whilst beatin’ the feet, after all.

      1. Getting a license to own and transport a gun in Massachusetts is as simple as going down to the local police station, filling out a form, and submitting fingerprints for an FBI background check. Provided you have no felony criminal record and you don’t like to smack your romantic partners around, you’re good to go as soon as the FBI gets back to your local PD with the OK.

        If you want a license to carry a handgun, then you need to do a bunch more things – like prove basic proficiency at handling and operating said weapon, including a range test. You also need to provide a reason, which can be as simple as “I’m a business owner and in the course of business I regularly transport large amounts of cash”, but “I’ve been a victim of a felony” also counts, as does working in a handful of occupations. The chief then decides whether your reasons are sufficient to permit you to carry a loaded handgun on your person.

        We’re quite happy with that, as we have a very low rate of gun crime; one of the lowest in the nation. Those who prefer an easier route to carrying a handgun are more than welcome, and in fact encouraged, to live in one of the dozens of states where such a thing is possible.

    1. A few days ago somebody in my neighborhood (California) was arrested for possession of a shuriken, I didn’t know what is was so I had to look it up. I doesn’t look like the kind of thing I’d want in my pocket.

    2. A sufficiently pedantic reading of California law would ban jump ropes. The bit that deals with nunchuks defines them as sticks of wood or other material joined by chain or other flexible link.

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