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The stepper motors in the Egg-Bot kit have a 5 mm shaft. Besides the standard 1/2" OD shaft collar and polyurethane cups, it's possible to use almost anything that can connect to the shaft as an "egg cup." For mounting large-mouth objects, it may be helpful to use a larger diameter shaft collar with a larger rubber bumper or even rigid coupling. One trick that has worked for objects as large as wine glasses is to use a timing belt pulley with a 5 mm bore as a giant "shaft collar", and then to glue or tape the object to the pulley. The [http://shop.evilmadscientist.com/productsmenu/51-accessories/208-coupler precision egg coupler] available from Evil Mad Scientist is made in a similar manner. | The stepper motors in the Egg-Bot kit have a 5 mm shaft. Besides the standard 1/2" OD shaft collar and polyurethane cups, it's possible to use almost anything that can connect to the shaft as an "egg cup." For mounting large-mouth objects, it may be helpful to use a larger diameter shaft collar with a larger rubber bumper or even rigid coupling. One trick that has worked for objects as large as wine glasses is to use a timing belt pulley with a 5 mm bore as a giant "shaft collar", and then to glue or tape the object to the pulley. The [http://shop.evilmadscientist.com/productsmenu/51-accessories/208-coupler precision egg coupler] available from Evil Mad Scientist is made in a similar manner. | ||
− | For glass ornaments, a trick that has worked is to use a suction cup attached to the shaft collar with adhesive. For example, | + | For glass ornaments, a trick that has worked is to use a suction cup attached to the shaft collar with adhesive. For example, hardware stores sell small, clear suction cups with "S" hangers intended for hanging light objects from windows, refrigerator doors, etc. Remove the metal "S" hanger, trim flush the section of the cup to which the hanger was attached, and then use adhesive to afix the trimmed end to the shaft collar. |