【求助】offset surface的一道题

壁厚1.5,均匀,我用normal时会破面,用autofit时虽不破但壁厚不均匀...请各位大哥指点一条生路...[img]https://www.icax.org/static/image/smiley/default/69.gif[/img][img]https://www.icax.org/static/image/smiley/default/69.gif[/img][img]https://www.icax.org/static/image/smiley/default/69.gif[/img][img]https://www.icax.org/static/image/smiley/default/69.gif[/img][img]https://www.icax.org/static/image/smiley/default/69.gif[/img]

  
   
Fig 1
There was a warning, as illustrated in fig 2, always appearing on the screen when I chose “normal” to offset a quilt which contained some irregular geometries such as rounds with small radii, sharp shapes, etc.  
And I find a difference between “normal” and “autofit”, that is, the former will create a homogeneously thick part while the latter, just non-homogeneously, as illustrated in fig 1.
The warning says, “Feature can not be created as defined. Do you want to create the feature successfully using the recommended Special Handling definition (affected surfaces are highlighted in green)?”---if I cast it aside and press “yes”, the surfaces which are not highlighted in green hasn’t been offset, thus generating a broken offset “quilt” (or some separate surfaces). Suddenly an idea flashed in the brain, “why not create surfaces by using their boundaries and then merge all the surfaces into a quilt? Or offset the ‘missing’ surfaces respectively, and then merge them?” Oh, let me have a try…
   
  
Fig 2

对不起,图贴不上.