Union not possible

[lugligino]

In attached file I would like to join two regions ...

[BrenBren]

Please note I have moved this thread from the AutoCAD Tips and Tricks Forum to the AutoCAD 3D Forum, as I believe it would be better served here.

[jgh]

These aren't solids. Before you use the UNION command these shapes must be EXTRUDEd. UNION only works on Solids not polylines.

[jgh]

I just EXTRUDEd the shapes 5 units and UNIONed them.

[james.eustace]

I just EXTRUDEd the shapes 5 units and UNIONed them.

For some reason when I do the same thing I get this error msg.


Modeling Operation Error:
Inconsistent face-body relationships.

[jaberwok]

For some reason when I do the same thing I get this error msg.

To bypass this, eXplode the regions, trim off the common parts and Pedit/Join/ the rest. Extrude.

[aledtaylor79401]

These aren't solids. Before you use the UNION command these shapes must be EXTRUDEd. UNION only works on Solids not polylines.


Union normally works fine with regions but in this case it doesn't. If one region is moved slightly to the side, the Union operation words fine.

I reproduced the drawing and had no problem unioning the regions.

Aled Taylor
Design Engineer

[kennet.sjoberg]

This is a common error in AutoCAD calculation with huge coordinates and calculation fuzz.
My workaround is to temporary scale the objects 0.001, do the manipulation and then rescale 1000.
Is that not enough I move the objects closer to 0,0,0 do the manipulation and move back.
A combination of the workaround will almost always help.
Use a help line to snap, to find the scale and or move vector.

: ) Happy Computing !

kennet