Sprocket Drafting As an example of an expert system tip, the first tip of the month comes from Don Grauel. Sprocket Drafting Utility (Tip #2024) creates a view of a sprocket given just the basic input of the chain size (number), tooth count, center point and tooth type. If you draw lots of sprockets in your designs, you are going to love this very effective drafting tool. After downloading the tip, load it using Visual LISP and type in DJG_RCS at the AutoCAD Command line. You will be prompted at the Command line for chain type (designated by industry standard numbers), number of teeth in the sprocket, whether or not to use the sharp tooth type and the center point. The rest is automatic and a real time saver. The answers to the previous run of the utility are remembered as the defaults for the next time around. This is a well-constructed program that can match your own shop's drawing standards with just a little tweaking of the LISP code. |