Robert Barnard wrote:

What is it you want to do?

If your going to do CNC, is it only for 2.5 axis or 3 axis machining,
milling or turning?  (Simple turning really is just 2.5 axis)

If you want to do mechanical design, and you want to check for collisions
and the like, you can't beat a good solid modeler for speed and all the
extra benefits.  Volume, moments and center of gravity come for free in your
design.

2D is great for cutting plate (gears, bulkhead, etc).  Minimal input,
minimal output.

But the more you can simulate, tweak, visualize to others (for advice) and
re-tweak, the better your design becomes (IMHO).

Rob

 
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