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Find the Maximum Fillet/Chamfer Radius for Closed Polygons

Ken

When you are working with a closed polygon (Fill, Polyline, Slab, Roof etc) and want to apply a radius or chamfer to a corner you do not need to guess the maximum value, or work it out manually - you can get ARCHICAD to do this for you, automatically.

To find the maximum value is really simple - you select your closed polygon then click a corner and choose the Fillet/Chamfer… option as shown with the Fill below:

The Fillet / Chamfer dialog will then appear with a value already visible in the Radius field.  This value will be based on the last used radius:

To find the maximum radius you need to select the current value (in order to overwrite it) and then you have two techniques you can use...

 - The Bash Technique: pick a number and hit it lots of times!

 - The Slash Technique: press number 9 then slash your finger down the keys!

Here is what the result might look like:  7777777777777 or 98765432.  The actual value does not matter - all that matters is that you create a number larger than anything possible in the geometry!

Once you have entered the number, ARCHICAD will think for a second and then update the field with the maximum possible radius... and that is it.  Simple :-)

Here is a video showing a couple of examples:

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