I use a work-around I wanted to share. I have had no luckmirroring distance-distance chamfers...the distances swap rise andrun places. Also patterning and mirroring fillets is more "miss"than "hit". So if I have mirrored intent, I generally feature upthe first half and create a split feature that regionalizes thefeatures into a solid body all their own. Then I mirror the bodyand make a combine feature to make everything one body. works everytime and I stay cool under the collarSolidworksParts And Features