I have just completed a small study to determine why we sometimes get all kinds of trash when saving a drawing as a DWG. This particular trash is associated with any part that has an axis in it, and what happens is that the axes and all of their labels show up and have to be cleaned out.
Through the testing I determined that the bottom line to preventing the trash is, make sure the SolidWorks drawing file has viewing of Axes turned off before you saves a DWG. Go to the View menu and uncheck Axes.
If you, for some reason need to have one or more axes show up in your drawing, here's how it works. All these observations are predicated on having the drawing View/Axes setting checked, and, of course, one or more axes in the model. An axis & its associated labels, etc. will show up in the DWG file if:
- The axis is visible in the model. Regardless of other settings (other than described above) it will come through.
Or,
- The axis is either shown or not in the drawing view, but some view somewhere has an axis visible. Then all axes and their labels come through. If no axes are visible in the drawing, none will come through to the DWG file.
Hope this helps someone - wish I had figured it out a couple years ago.
WT