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Gadget Freak Case #122: Cutting Pumpkins the Tesla Way
Design News Staff -- Design News, June 23, 2008
Rick Crammond created a gadget for cutting Halloween pumpkins that is powered by the faucet in a kitchen sink. The water pressure drives a stack of CDs that has been converted into a turbine. Crammond's Tesla CD Turbine uses two principles developed by Nikola Tesla in the early 1900s. The turbine uses flat discs rather than blades or cups. In Crammond's gadget, the discs are CDs or DVDs stacked in their case. Crammond adds a few other household items — such as Krazy Glue® and glue sticks — and hooks it all to a kitchen faucet using a garden hose. The result is a surprisingly powerful turbine. Crammond uses that turbine power to drive a skill saw blade for easy pumpkin cutting.
Get the Build Instructions | View Parts List | Post a Comment | Watch the Video
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| Amt | Part Description | |
| 8 | CDs (make sure they aren't cracked, warped or labeled) | |
| 1 | CD spindle with cover | |
| 42 | 3/8- x 1/32-inch N42 Neodymium magnets | |
| 6 | ½- x 1/8-inch N50 Neodymium magnets | |
| 1 | Extension water nozzle | |
| 1 | Small piece of tubing (to fit inside water nozzle) | |
| 1 | 18-inch section of ¾-inch PVC tubing | |
| 1 | ¾-inch PVC adapter, PVC pipe to garden hose, male, to fit water nozzle inlet end | |
| Get build instructions and complete parts list | ||
Watch more videos at Talkback
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I'm the inventor; thanks for the comments on my "Freaky" gadget, the Tesla CD...
- 2008-06-29 18:02:37 -
Far to dangerous.Not recomended at all!
- 2008-06-26 04:39:59 -
Hey, John ease up attitude! Rick Crammond seems to be a genuinely interesting inventor/creator....
- 2008-06-25 14:01:55
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