Dynamic Fillet (Tip #2213) by Lloyd Beachy is an innovative approach to creating a fillet between lines and arcs. Load the LISP code and type DFILLET at the Command line to activate the function. Just like the regular Fillet command in AutoCAD, this function starts by asking you to select two objects. The objects selected must be lines or arcs. You also are given the opportunity to change the radius that will be applied to the initial fillet. After the fillet is created, a loop is started where you can press the plus or minus keys to increase or decrease the size of the fillet dynamically. Each time you press the plus or minus, the fillet value is changed by a factor of two raised to the one-tenth power (2^0.1) or approximately 1.07. For example, pressing plus results in a fillet that is 1.07 times larger. This utility is fun to run, and it is this month's top tip, congratulations Lloyd!