Making stl files with python for 3d printing

[Poul Riis]

Den mandag den 14. november 2016 kl. 05.55.20 UTC+1 skrev Gregory Ewing:
> Poul Riis wrote:
> > However, when sending the .stl file produced to a 3D-printer the vase comes
> > out as a filled solid - no room for water and flowers!
> 
> My guess is that you have a problem with the orientation
> of your faces. The inner surface needs to have its triangles
> oriented so that their "outside" direction is towards the
> centre of the vase.
> 
> If you generate the inner surface using the same code as
> the outer surface and just change the radius, you will
> end up with both surfaces oriented outwards, which would
> produce the effect you describe.
> 
> -- 
> Greg

You are right - thank you so much!

Poul Riis