hi guys i was wondering if you knew how to get rid of the white lines on the edges of your parts when in an assembly (i dont know what they are called i think there just the part feature edges)
Go to to Edit visual styles and set isolines to none
What program are you using?
In 3DS Max you just turn off edged faces in that particular viewport.
I hope you are not using 3ds max for designing parts. while that is great for animations, autodesk has much more powerful tools for design.