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Edit the Radius of a Fillet
Tip# 3844 By Alan Thompson On 17-Mar-2012
Rated By 0 users Downloaded : 644
Categories : Object Properties, Curved Objects, 2D Editing
Software type : AutoCAD 2012
Rename File To : ContinuousFillet.LSP
Interactively increase or decrease the radius of an existing fillet.

This routine from Alan Thompson allows you to select an existing fillet in AutoCAD and interactively edit the radius. You can pick a new length, enter a numerical value, or use the keyboard to increase or decrease the radius by whatever value you choose, one step at a time. Start by loading the LISP file, then type in the command CF. Select an arc tangent to two lines, or a polyline arc. The current radius is reported, and at this point you can choose two points to define a new radius, enter a new radius value, or use the + and - (plus and minus) keys to change the radius. You can adjust the increment value using the Settings option before selecting the arc.


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User comments
Comment by Cooper,Kent
Posted on 2012-03-30 11:50:41
What a great idea! One glitch I find, though.... If a Polyline radius is taken close to the maximum possible given the adjacent line segments, it can end up with an error message: "Cannot fillet polyline arc segments.", after which further trying to edit that Polyline arc segment always gives that message, even when typing in what should be a valid radius. It must be selecting on the arc segment instead of one [or both?] of the adjacent line segments. [It also can't work with 2D "heavy" Polylines, but that's not going to bother most people most of the time.]