I created two different features using the same sketch, so the second one now has that little hand under it showing the sketch is shared.
So these two extrudes I thought would always be the same now want to be different.
How do I "unshare" the sketch? so that have two independent sketches driving my features?
This doesn't seem possible, so the time saving sharing of sketches becomes in future quite restrictive. Looks like I have to recreate the second feature that used my sketch, and then repair all the features after that depended on it.
So don't ever share sketches between features without expecting to lose future design flexibility.
Another feature that seems great but then becomes a trap for the unwary.
Instead of sharing sketches, project them through into a coincident new sketch. The first sketch drives the second but is easily separable, or as is more likely, partially separable from the first.