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Cool mechanical toy made by Thingiverse user Zach Redding for his little brother, who requested “a ninja star where the blades pop out.” I want one water-jet-cut from stainless steel.


Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.



  1. I want one that is tension spring loaded, such that the act of throwing it is what extends the blades… so they’re safe to handle but deadly when thrown :-)

  2. You’ll poke yer’ eye out kid.

  3. You’ll poke yer’ eye out kid.

  4. You’ll poke yer’ eye out kid.

  5. You’ll poke yer’ eye out kid.

  6. Dave Brunker says:

    Didn’t the weapon from the 1980s B-movie Krull do the same thing?  (SPOILER: While the Krull weapon was a bit larger it was about equally useful.)

    1.  Ah, yes.  The “Glave,” if memory serves.  I remember the knife but have largely forgotten the movie.   I think there was a big evil castle that was never in the same place on two consecutive days or something.  Probably had a soundtrack by Tangerine Dream, too…. =]