60 to 20 Reduction Gear Set

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Yes, even this design can be downloaded for free once I am fully funded for my RoboGuts S.T.E.A.M. Education Program Kits; IF each viewer donates just $5 I'll be funded almost overnight and then all my designs become downloadable for free! The fastest way to get all my .STL files for free is to donate $5 to help fund school materials ... once I have $3,500 I'll make all these files downloadable for free. https://www.gofundme.com/roboguts-kits-lessons A 60-to-20 reduction gear from a 5mm motor drive to a 3mm drive shaft is modeled after my memories of a Model Electronics Corp. SuperGear set I used on one of my R/C airplanes ... the Electric Red Air Vented Rascal. Here's the first "test flight" video; http://www.brainless.org/Multi... Nobody thought an electric plane could perform so well until they saw this, and then my bigger "the Electric Red SIG Kadet Senior." This is another entry to the makezine.com/go/makerbot contest ... blog.makezine.com/archive/2010/04/makerbot_giveaway.html The gears are pointy because I don't know the tolerances to make a real gear tooth for the MakerBot Printer, but for printed plastic parts they will work just fine. I really need a job, but I can design a custom part if you like on contract. Instructions: Make this with your MakerBot MAKE Robot! If you successfully make this with a 3D printer, please send me the build-file and machine type so it can be uploaded here for others to use.