The problem is that you don't know what path the print head will take, so you can't add the support ahead of time and guarantee the print head won't hit it during non-printing moves.

You're better off adding your own support in a few strategic places.  Try the method I'm using in Repetier:
http://www.soliforum.com/post/33749/#p33749

Thanks for your response.  I usually manually support with a file tip or something, so its really no problem to place the support, as long as you place it below or even with the printing surface.  If you are early on one pass, just squeeze the clay a little to rise up, not talking about a lot of clay, just a thin pillar.  As long as you keep it under the current printing level, it should be no problem in my mind.
P/s  I also use Repetier to join models, add to them etc, then selecting all parts and save, resulting in a single model.
I may create some small support pillars and arrange as you suggest.   The sample pic of the model on my original post was created by adding a base, and sword to the original model in Repetier.   Thanks.

You're better off adding your own support in a few strategic places.  Try the method I'm using in Repetier:
http://www.soliforum.com/post/33749/#p33749

Here's a thread from someone who did something similar:
http://forum.typeamachines.com/viewtopi … &t=385

You can actually see that his balsa wood+blue tape was just a tiny amount too short, there's a slight discontinuity where the filament 'goes off the edge'. But it's slight enough to barely be noticeable, and 2-3 layers later it would be compensated for. Bottom line is: it CAN work, just be careful.

Regards