problem with 3D

[marinebulle]

hello,
I'm a trainee in a company, and my job is to design a bridge.
I'm french, so please excuse me if I make mistakes in english

I did a solid for the all bridge, now I would like to divide this solid into different solids for different materials.
The form is quite complexe ( it is not cubic)

I selected a face of my solid and I extruded it to figure the first wall, but now, autocad doesn't recognize my draw as a solid, so I can't continue.

I could I make it a solid again?
or do you know a solution to begin again from the draw of yesterday ( not the last saved)

thanks a lot for your help

Marine

 

[borgunit]

Not quite sure what you are doing, but could you create the next part as a separate solids file and then XREF the one into the other? A suggestion.

"Everybody is ignorant, only on different subjects." — Will Rogers

 

[MikeHalloran]

To make a solid in AutoCAD's ACIS CSG system, you can extrude a closed polyline or a circle.

AutoCAD will automatically delete the polyline unless you
SETVAR <CR> DELOBJ <CR> 0 <CR>,
which I suggest that you do when starting any new drawing. The reason is that when you explode a solid, AutoCAD decomposes it into REGIONs, but it doesn't reconstruct the original polylines, which you need to reconstruct the solid.

When you build the bridge over again, don't make it one big solid and then try to separate it by material. Use different layers for different materials as you build it. Even for components that are of the same material, resist the temptation to UNION them until you can't avoid it.



Mike Halloran
Pembroke Pines, FL, USA