In a nut shell:
Unfortunately it isn’t quite perfect. For example, when you load a STL file in blender its shown as a clean model.
However, when that same STL file is loaded into sketchup it it looks like this.
As far as I can tell there is no change the geometry of the object, as can be seen when you turn off edges making them invisible. Below is the same file with no changes made other than to turn edges invisible. This was done by going to wire frame mode (view-> face style -> wireframe) , draging a box around the object to select the edges and using the context menu to select ‘hide’. Then return to shaded view. To view hidden lines select view->hidden geometry from the tool-bar.
The object also appears normal if exported using this plug-in and is again viewed in blender. Although, the dimensions of the object may have changed. Either that or the perspective has changed and I’m not knowledgeable enough to work out which.
Before exporting your own objects made in sketchup for use on a reprap, be sure to give it a once over with a fantastic plugin called Manifold 2.2. It does the following:
Looks at the contents of a selected group and tries to fix it so it is ‘manifold’ for 3D-printing etc.
The group needs to be a 3D shape which is fully surfaced without internal divisions or intraneous/extraneous geometry/entities…
It removes ‘non-face/non-edge’ entities.
It removes ‘disconnected geometry’.
It removes ‘unfaced-edges’.
It runs an initial ‘health-check’ and reports.
It removes face ‘flaps’.
It heals ‘holes’.
It removes ‘internal faces’.
It orients all faces consistently to face ‘outwards’.
It erases ‘coplanar edges’ [optional].
It ‘triangulates’ all of the faces [optional].
It highlights major errors.
By doing this along with some other requirements objects you make in sketchup may be printable on some level. Not having my own mendel I cant put this to the test just yet. So if you see something here that doesnt seem right, by all means let me know.
As always, if you find your self using this plugins on a daily bases or for a commercial application, make sure you send a donation in the direction of the creators.