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rfcomm2k

3D extrusions?

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I am trying to use CA to design from scratch a structure that does not follow any of the conventional methods in the software. To be exact, I have several sheets of 1/4" tempered glass that I intend to use to construct a greenhouse, but need a design first.

 

In a very old version of Turbocad and in Autocad LT I could create a 2D object (for example the end view of a 2x4 with notches cut in 2 corners, giving it a T shape). I could then extrude this object to whatever length desired. In this case again, the 2x4 is intended to be a support for the glass, so there are rabbets cut in 2 opposite edges to allow the glass to sit on the 2x4 and will be held in by glacing applied just as if it were a small pane of glass in a sash.

 

I have not been able to see how I can create these objects in CA. Can it be done?

 

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I think the easiest method is to draw the section as a closed polyline, then convert the polyline to a polyline solid to give it depth. You could also save the closed polyline in your user library and use it as a molding profile. You could also use solid primitives and boolean operations to create the shape, but then you can no longer dynamically change the length of the object.

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1.  3D Faces (Primitive Solid) can be extruded.

2.  Molding Polylines use a Profile and extrude that

3.  Solids can be "Exploded", resulting in 3D Faces (see note #1)

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Thank you both. I find that the 3D face method seems to be easiest for me. I suppose I will find out later whether this is the best method, but for now it is doing what I want.

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