Tue, 18 Jun 2013 06:39:52 GMT TAC-Astrogear - showroom of unique products for sale on Ponoko http://www.ponoko.com/showroom/TAC-Astrogear/5339 This adapter links 1/8" square shafts used for many hobby robotics gears to circular shafts. The circular side is sized to a typical 1/4"-20 UNC tap drill diameter. You'll have to tap it yourself. Quasi-legal stuff: This design meets my needs for my own projects. I can't promise it will meet your needs. You will have to examine the design and decide for yourself if it will work for your projects. <br></br><img alt="Shaft_adapter" src="http://static1.ponoko.com/design_images/images/37599/10c6c04e-d920-36e0-904d-f7b049c3e842/shaft_adapter.stl_showroom_image.png?1297396834" /> Tue, 15 Feb 2011 22:07:10 GMT http://www.ponoko.com/showroom/TAC-Astrogear/5339?time=Sat+Feb+12+21%3A58%3A46+UTC+2011 TAC-Astrogear http://www.ponoko.com/showroom/TAC-Astrogear/5331 This the base plate for a right-angled hand-wheel system for a 4-inch telescope pier. It is mounted inside the pier, holding a spline to drive the mount attachment screw. A pair of bevel gears can be attached beneath the plate.<br></br><img alt="Base_plate" src="http://static1.ponoko.com/design_images/images/37599/15138c6a-7f5f-319a-80a3-abafe84a58a4/base_plate.stl_showroom_image.png?1297397084" /> Sat, 12 Feb 2011 21:29:54 GMT http://www.ponoko.com/showroom/TAC-Astrogear/5331?time=Fri+Feb+11+05%3A08%3A08+UTC+2011 TAC-Astrogear