Fillet Blending Options… They’re Not Just for “Rounds” Anymore!

Darin at DASI - SOLIDWORKS Two Minute Tech Tip

Written by: Darin J. Grosser, CSWE

I’m Darin @ DASI, and THIS is a SOLIDWORKS – Two Minute Tech Tip!!

“Fillets” and “Rounds”

For as long as I can remember, the terms “Fillet” and “Round” have been pretty interchangeable, but with new blending options in SOLIDWORKS 2015 and 2016, the common ‘Fillet’ tool sheds the restriction of only being ‘round’.

Smooth Blends are the Name of the Game

Most mechanical part design will continue to use the Fillet tool to place a ‘ball nose’ type round transition between adjacent faces, but where Consumer goodsConstant Radius Fillet Tool and stylized parts are concerned, there are new options that allow for deeper dimensional control as well as Curvature Continuous (C2) blends.

In the Constant Radius (Size) Fillet tool under the Fillet Parameters, there is a new option called “Asymmetric”. This allows for the fillet to be defined by 2 different dimensions creating a more relaxed, elliptical blend between the faces.

Curvature Continuous Profile

To take it to a whole new level, you can combine that with the Curvature Continuous Profile setting to convert the fillet to more of a Parabolic shape, further running out the blend between fillet and face to give the feature that Class A smoothing without all the hassle of using Surfacing tools or Face Blend fillets.



The tool is just as easy to use as it has always been, and the Zebra Stripes confirm the amazing quality improvement between a ‘normal’ Constant Radius Fillet and an Asymmetric, C2 Fillet!

Asymmetric vs Constant Radius Fillet


Don’t forget to submit and Enhancement Request if you have an idea for a new feature, or how an existing one could be made better!! You CAN have an effect on SOLIDWORKS Development. Just login to your account and submit your idea!

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Until next time…………… 🙂

  • Darin @ DASI, Your SOLIDWORKS Guy

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