Hi OSTexo, thanks for the example. Probably at least at first you'll get 2 sets of lines in a situation like that. The most straightforward way to do things is to have lines hidden by surfaces, it's not very easy to make lines hide other lines.

Later on it could be possible to add a kind of "remove duplicates" type step, that might help to clean up some things. But that probably wouldn't happen initially at least.

- Michael

Hello,

Thanks for the explanation. It is actually less work for me to use the projection feature like the example on the right, so it really isn't a big deal to continue doing it that way, the actual solids stay much simpler and manageable, and if something like marking changes it is much easier to delete the projection and redraw than hacking up the solids. Thanks.