Try messaging Charles Culp directly. While the link may be broken, he may be able to point you in the right direction. I've worked with Rhino files before. I didn't enjoy it. I prefer Solidworks or Unigraphics/NX.
thanks for that I have sent Charles a message see how that goes.
Remember, Rhino is a surface modeler, so you'll have a lot if sewing of features to make them usable solid models. The person who made the models I worked with made each feature a separate surface model, so I had to make each one a solid, then boolean them together.
That's why daddy drinks...
Here is the method I used to get an imported 3DS mesh model pointing "Up" in SolidWorks:
1. SW has Y axis as Up but 3DS has Z axis as Up, so the imported file shows the Top of the model when using the SW Front view.
2. From the SW Front view, right click and select View Orientation. Choose the Update Standard Views icon, then select Top View.
3. Now the ISO view shows the model oriented correctly, but the Plane names Front & Top are wrong, so renamed Front to Top & Top to Front.
(image attached) Rhino Y is SolidWorks Z.
and, Rhino has the option to rotate when opening a sldprt,.. but/unfortunately, Solidworks does not have a option at the time of import.)
imho, the simple way is to Move/Rotate your .3dm import -90 along the X axis. (image attached)
.... otherwise, the Rhino user would need to pre-rotate -90 degs along the X axis.