Let's say I have a couple simple geometric punches. One round, one square 3" tall. Now let's say that after creating these two punches I want to put them into a retainer 1.5" thick. This is easy enough. But I must create hole in this retainer that matches the punches and at the same location. I've had some success doing it and I believe it can be done through swapping geometry from one sketch to another on the spec tree. I'm wondering if there isn't some other module say one of the DMU's that could do this easier.