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MrfixitRick is back at it, this time around he’s debuting his Tesla CD turbine pencil sharpener. Keen observers will notice the duel blade disk turbine in a standard jewel case enclosure.

This is possibly the worlds simplest turbine. It’s uses a CD jewel case, with only two CD discs as the rotor. The four magnets between the discs act as spacers and magnetic drive.

This turbine has no shaft, no bearings, and no seals, and on compressed air is capable of speeds of up to 8000 rpm.

The turbine is shown magnetically coupled to the pencil sharpener, and propelling it at speeds up to 2200 rpm (so far!). It takes down a pencil real fast!


Tesla turbine + shake flashlight – Link

Tesla meets the Salad Shooter – Link

Tesla turbine from a CD disc pack -Link

Adam Flaherty

I make cool stuff and write about other people making cool stuff on If you have something you think I should see, send me a tip.



  1. anon says:

    Every time he says “CD Jewel case” drink 1 shot. Every time he says “Tesla Turbine” drink 1 beer.

    You’ll be out cold before the end of this 8 minute video (which doesn’t really show the thing operating until about 6 or 7 minutes in).

    1. mrfixitrick says:

      Ok anon, it’s storytime:

      A man who was in need of many things runs into an old bottle one day. He wipes the dust off, and sure enough, a genie pops out. The genie states, “I can grant you one wish and only one wish. One wish and only one wish is all that I can grant.”
      It is apparent that this is a big once-in-a-lifetime opportunity, but before he could think, the man blurts out, “That’s wonderful, but you know, I wish you wouldn’t repeat yourself so much, it’s really irritating.”
      “Your wish is my command”, and with a flash, the genie was gone.