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cool, one the things about openscad is that it shows you that algebra and amths in general actually has a real world use :-)

It IS CAD.
Computer Aided Design.
CAD is a process NOT a program
I really wonder how some people get their jobs.

Someone should take the coffee away from the guy in the self cad video !

Ah it's browser based.
Given my internet is occasionally unreliable - online software is rarely on my list.

at that age I'd probably go with the 123d set of programs: http://www.123dapp.com/
tinkercad is supposed to be real easy to use.

My personal choice is openscad, which would be ideal for any...