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leeminardi
en respuesta a: Kent1Cooper

First off, the circles are not concentric.  To be so they would all have their center points coincident.

 

Given two circles and a desired fillet radius there are potentially eight different arcs that could be added as a fillet  between the two circles.  The AutoCAD fillet command will only give you two of these.  The circle TTR option (tangent- tangent-radius) will give you all eight.

The image below left shows the two results you can get with fillet.  The right image shows the results with circle-TTR after trimming.  I suggest you use circle -TTR and then trim to get the desired result.

fillets.JPG

lee.minardi