The folks at Modd3d show us how to make a confetti cannon:

I’ll show you how to build a pneumatic confetti cannon that sprays bits of paper all over the place at the push of a button. It is safe to use and easy to build, and the confetti shower effect it produces is excellent for stage shows, dances, parties, and those times when you need to make the biggest mess possible in just under one second.

It uses a fire extinguisher, a sprinkler valve, and a plastic pipe. – Link.


Cherry Blossoms – Baghdad in Boston – Link.

Becky Stern

Becky Stern

Becky Stern ( is a DIY guru and director of wearable electronics at Adafruit. She publishes a new project video every week and hosts a live show on YouTube. Formerly Becky was Senior Video Producer for MAKE. Becky lives in Brooklyn, NY and belongs to art groups Free Art & Technology (“release early, often, and with rap music”) and Madagascar Institute (“fear is never boring”).

  • Don

    Another feature one could add for safety is something called a ‘pneumatic fuse.’ One can get these at McMaster-Carr

  • Don Hersey

    Sorry for the out-of-sequence posts, got a new hybridized LAN, still kinda hinky, anyway. . .
    The Variac, while a cool device, doesn’t provide isolation, surprisingly enough, so if you go this route, also deploy an isolation transformer. With a DC solenoid, battery operation could be achieved. Either add some anti-spike hardware, or be sure to employ a robust switch, both in terms of through current and blocking potential.

  • featheredfrog


    • a rule or especially body of rules or principles generally established as valid and fundamental in a field or art or philosophy; “the neoclassical …
    • a priest who is a member of a cathedral chapter
    • canyon: a ravine formed by a river in an area with little rainfall
    • a contrapuntal piece of music in which a melody in one part is imitated exactly in other parts
    • a complete list of saints that have been recognized by the Roman Catholic Church
    • a collection of books accepted as holy scripture especially the books of the Bible recognized by any Christian church as genuine and inspired


    • Bigthing go BOOM!
  • jonathan peterson

    That’s hard. You can make a pretty damn big mess really quickly with a couple rolls of toilet paper, a shop-vac and a paint roller.

  • Becky Stern

    @featheredfrog: Thanks! =]

  • Scott

    You realize I’m going to have to try the shop-vac thing now. You should write that one up.