Australian Ham Radio Discussion Forum ( AHRDF )

Hello,
  I am looking to create some basic drawings of a yagi antenna boom where two different sized square tube material come together, not looking for a full blown CAD package, with its associated learning curve but something a bit simpler.  Some inbuilt libraries of shapes and the ability to put some shading on surfaces.

Any of you bright sparks have a recommendation that will not empty my wallet?

FreeCad maybe https://www.freecadweb.org/.

As for the learning curve, I've never found one that doesn't need a month of Sundays and an IQ of 200+ to get any usable output from it.

How about Inkscape?

https://inkscape.org/

It is a drawing tool (i.e. illustrations, not CAD). More like Adobe Illustrator or Corel Draw.

3D or 2D ?

If 2D then you might try LibreCAD...
https://librecad.org/