I have imported dwg models in sketchup, cleaned them up (removed excess lines, put in layers, made groups and components) so I could work with and made little adjustments to the model in sketchup and exported it again to dwg. The dwg export however is huge, like several hundreds MB.
It was a pretty heavy model to begin with, with loads of meshes. But still : the original dwg file was like 20MB, and after adjusting it in sketchup and exporting it again, it is about 10 times as big.
Are there things to avoid in sketchup when you want to keep the dwg size small?