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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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Archicad has been the primary software in my architectural practice for over a decade. I am continuously impressed by the powerful solution Archicad offers for the design process from early design through construction. I love that I never need to “dumb-down” my virtual designs at any point along the way! The power of the virtual model is incredible through every stage of the project and it is especially helpful for many clients who otherwise struggle with visualization of their project.

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