Hello, I'm using Solidworks 2009-2010 and for some strange reason, recently, when I have gone to sketch two ellipses or two circles that have the same centrepoint, it classifies the two separate sketches as one individual sketch. I don't want this, because it won't let me to extrude one and extrude cut the other. So I want to know how to separate these two sketches into their individual parts, as I have not found a way to do it yet. Thank you.