MarsRover MonsterBot Wheel Rim

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Yes, even this design can be a FREE download 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 FREE downloads! The fastest and cheapest way to get all my .STL files FREE is to donate $5 to help fund school materials ... once I have $3,500 I'll convert all these files to FREE downloads. https://www.gofundme.com/roboguts-kits-lessons This is a nice fat wheel for making a Mars rover-type looking vehicle ... the hub ties to a servo motor/servo horn or up to 6mm motor axle. This is another of many entries to the Makezine.com go/makerbot contest ... blog.makezine.com/archive/2010/04/makerbot_giveaway.html I really need a job, but I can design a custom part if you like on contract. Instructions: MakerBot four of these and build a rover... 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.