Drongle McMahon is into mesh and does lots of experimenting. When I see his posts in the SL Forum I usually check them out to see what he has to say. I learn a bunch. The more I learn the more I cut from the cost of my mesh objects. So, while this article may get geeky it can save you Lindens.

Recently he has been seeing oddities in the physics model’s cost affect on items using prim type physics, which you may need to use for some objects like walls with doors. There is a thread titled: Triangle physics weight – Cautionary tales, episode 2.
His post points out some problems with physics models and how one of his went from a Land Impact (LI) of 7,671 to 0.5… why is worth knowing and understanding.
