undseth - this model is looking really great! NURBS are the tool for the most precise mechanical modeling - damn are they hard to master but the results are sweet. i've been working on and off on my mclaren model and i have yet to figure out what the rebuild surfaces trim-convert accomplishes - actually nothing when i use it... a trim is always a trim, right? when you take away the trim aspect you lose the hole - or is there a way of trimming and rebuilding where you retain the shape and end up with a simple NURBS object? confused. again - looking really fine - keep it up