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I have drawn a SOLID but I cannot select it during the EXTRUDE operation. I can select other objects, such as CIRCLEs and RECTANGLEs.
Why?
SOLID is important for drawing irregular polygons, so it should be EXTRUDEable.
Thank you.
Comments
You can both extrude and push/pull solid faces (among other operations on them). Extruding a solid, as such, is an undefined operation. Extruding a cube into a tesseract is an intriguing idea, though.
I figured this out.
I have to type REGION and then click on the irregular polygon, the result of SOLID.
Then I can extrude it.
Hmm, confusing... The word 'Solid' can point to (at least) 3 things: '2D' solid (create with the _Solid command), 3D solid, or hatch with a solid hatch pattern.
I assume the OP is referring to '2D' solids.
It seems that BC considers these to be obsolete and offers limited 3D feature for them.