Drinking Bird Ornament
thingiverse
This ornamental drinking bird continuously bobs with the flicker of Christmas lights. The heat engine mechanism works due to the temperature difference between its cool head and warm body, causing it to bob. Watch a video here: http://www.youtube.com/watch?v=LZnzyz4yiH0&feature=youtu.be. Print the design (enlarge 102%), suitable for MakerBot Replicator 2's 9.5-inch length. Attach an ornament hook or paper clip to the top hole. Insert a drinking bird in the square side holes, available at http://www.teachersource.com/product/drinking-bird/energy or http://www.amazon.com/Drinking-Bird-4975-The-Famous/dp/B000JSGLBK/ref=sr_1_1?ie=UTF8&qid=1385430421&sr=8-1&keywords=drinking+bird. Finally, insert a C7 Christmas bulb (part of light string) in the bottom slot, adjusting it until snugly fit, and watch the bird bob after about a minute - 15 seconds of bobbing followed by 20 seconds of waiting per cycle.
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