1. Cut and past into other sketches (but lose relations), contstrain
all, then autodim (not associative to first sketch).
2. Create new sketches and use "convert entities" and keep
associativity to first sketch, using it as the "base sketch".
3. Create "derived sketches" and use "contour selection" to drive
features, keeps associativity to first sketch.
Question, can you avoid breaking the sketch into parts by using contour
selection for selective feature creation?
~Alex