Star Knob

grabcad

A Versatile Handle that can be attached to a Long Coupling Nut. The Standard Settings work perfectly for a Missing Handle on our Lawn Mower, and will fit a 5/16" Nut. To Customize, download freecad, (It's Absolutely Free!) and open the file. Then in the left panel you'll see a Tree of Operations that describe the handle. Double click on "Customize" in that tree. There you will find the Settings, the most important of which is the Nut Width. It's best to make small adjustments, and watch out for small red flags on the operations icons, these indicate an error, like trying to make the minimum handle diameter less than the inner shaft size etc... Just go back to the last working settings and try again. After you're happy with your changes, regenerate the mesh part, and export to STL. See: https://wiki.freecadweb.org/Manual:Preparing_models_for_3D_printing#Converting_objects_to_meshes The handle was loosely based on the basic sketcher tutorial here:https://wiki.freecadweb.org/Basic_Sketcher_Tutorial