Thank you TIG for this workflow. When I'll get more experience probably will it go even faster. I changed the default settings X-ray and on the "front-material" I gave the blue and on the "back-material" I gave red. Now much easier to work in this mode. If the model only needs a little sort out your plugin (SolidSolver) copes better. Thank you again

If you're importing CAD data, explode the whole plan - including all blocks - and regroup it. The clipping plane is also dependent on the field of view. Use a higher focal length to get closer (zoom). (i have FOV assigned to "V" to be able to change it dynamically)

you can usually fix this pretty quick by turning on hidden geometry, window select the faces you'd like to give visible edges to, copy, exit group (or group original), paste in place, turn off hidden geometry, explode group.. (sometimes readjusting the soften smooth setting on the copied face after pasting.. or selecting the face and deleting, etc..). attach the .skp if you can't figure it out.. i'm pretty sure you should be able to do it on this model.

Yes, this is exactly what I'm looking for. Thanks for your fast answer TIG. Regards,

You are right. We must be careful because they will be losses. But only once you convert it is still acceptable. Regards,

Thank you for the advice, Today I finally had time to do tests. Regards,