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I was wondering, does anyone still use 2-1/2 D drawing? When I go to draw something for 3D use I prefer to either draw it using the actual 3D entities in Datacad (polylines, polygons or slabs), or if I am going to push/pull in another app I like to draw it in Datacad 2D linework and then use the native 3D entities of the other app to build my objects from the 2D linework. I was just curious if anyone is using z-base/heights for their 2D entities with the intention of using them for 3D anymore?

We don't use the 2 1/2 D features because the geometry doesn't translate over to Sketchup, etc.

We are also finding that our engineers have trouble with our files if everything isn't flattened out to Zero Z-base and Z-height.

David Henderson has written a nifty little macro that will automatically zero out everything in a drawing file that comes in handy. I suspect that he will respond with a download link.

Occasionally, I use Z values to exclude / include entities in a Clip Cube - for 2D construction drawing purposes.

David: I could have sworn that you sent it to me.

I attached the macro. It has no interface and will reset the z heights on all layers to zero. This will not change the heights of entities that are already in the drawings however.

Since we can flatten entities when exporting a file, why can we not have that switch on when importing a file?

In 25, 30? years of using Datacad, I can't think of when I've used it deliberately in 3D-mode. I use Sketchup for that, it's just so much more intuitive. That and I don't use Datacad intensively-enough to learn half it's functions. I just don't have a drafting-intensive practice at the moment.

I primarily use Datacad for 2D construction details, floor-plans and building sections, and site plans. Everything else is primarily-done with Sketchup-Pro and Layout.

I use a DWG export/import of accurate DataCAD drawing to Sketchup to model my 3D work with the exception being topo contours.
I did get my start in architectural 3D with DataCAD but now find I can almost model as fast in Sketchup as I can draw in 2D in DataCAD.

I've said this before but we really don't need or want a tool to do everything as parts will always suffer when going this route. I have several saws and hammers in my workshop...pick the right tool for the job and your expertise level

Bob