yeah TIG, i think i'm being unclear with my intent here.. i'm not too concerned with being 100% precise in order to build accurately (for instance, our tapes are in 1/16" increments so i round to the nearest 16th for the cut lists)..
my concern is the method i previously had to go through in order to draw my arcs.. shown in the first half of this video --
[flash=500,400:ajuoc4zj]http://www.youtube.com/v/sCpbagJfGGQ&hl=en&fs=1[/flash:ajuoc4zj]
it can be a pain to get the point which i achieved at 0:25 in the video.. especially when using a laptop with no mouse as i often do on the jobsite..
you'll see though that i divide my arcs up into 8" segments and there's no way i'm thinking about using a 1000 segment arc for push/pull etc..
i just want to find the point where an 8' radius is 5' tall -- i'm not too concerned with having true circles in SU.. it's just that if they were true, i'd be able to find that point very easily.. by hyper-dividing them into thousands of segments, i can temporarily mimic a true circle and get my construction point..
(and yes, 2000 may be overkill -- that was just an experiment that happened to work out and i didn't try to find the minimum amount i should be dividing them at.. you're saying 689 segments works as well so i'll try something closer to that)