quietsamurai98, that would be a different function entirely - one quite a bit simpler than the target of this thread. You describe something along the lines of 'press X to place symmetrical parts involving the immediate part selected as a new, nested radial center'. The thread is about subdividing, say, 36-way symmetry of booster rockets, so that you could select '4 way subdivision' and place a part on every ninth rocket. Both would be useful.