How do you make your Solid Works part and assembly models light weight? There are a couple of things you can do before your save you Solidworks model in order to reduce the file size and keep it as small and as light weight as possible. First, turn off all of the "items." This includes "View Plane", "View Origins", "View Axes", etc. Do not just hide them. Turn them all off! Next, change the Display Style to Shaded (not Shaded with Edges). Yes, those shaded edges do make a bit of a difference, small, but these all add up. Finally, under View Settings, turn off RealView Graphics and Shadows in Shaded Mode. If you do adjust all of these settings before you save you part file or assembly you will save on space and keep the file size down, which is a real plus when dealing with a large assembly.