I have been using Viagrafix Modelcad for sometime and found it fairly easy to pick up. The print routine for large dwgs printed to any scale on any size paper is particularly good. I believe it is/was a cutdown version of something like autocad and it sold for less thaan $100 a long time ago. drawback is that it would not open DWG formats but would open DXF's. So I use the free copy of turbocad2d to read DWG than export to dxf for ModelCad. any plans I draw up, I save in modelcad format and also DXF.

Try a search on Viagrafix Modelcad and see what you can sort out ( I got lost tryiing to figure out who was selling what. ) but upshot is that Modelcad still appears to be available ( probably a much better version than mine which was written for windows 95 - but still works on XP ) freed trial downloads are available and price appears to be $55 - very reasonable. there is a discussion on modelcad 3000 on one of forums - do a search.

requiring more effort in learning - turbocad 14 - recent release and reasonably priced - see amazon.

I am not a draughtsman so these comments are based on my limited experience and my engineering attitude to learning on the job vs reading instructions.

hope this helps.

John