07-28-2018
06:56 AM
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07-28-2018
06:56 AM
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.
lee.minardi