creation flat model

[davix84]

Save everyone for some time that I don't go into this forum.
I have to realize the development of a perforated circular lid adhering to a conical trunk surface.to do this I extruded the circle (given the diameter and drilling) with extensions distance from face being the face the trunk-conic surface, so far all right. when I have to make the development comes out the message "creation of the unsuccessful flat model"

 

[stefanobruno]

do you not understand a tube (conical trunk ), do you have an image or a scarabocchio?

 

[davix84]

do you not understand a tube (conical trunk ), do you have an image or a scarabocchio?

the flat model of the trunk-cono did it without problems while the side cover, as seen in the figure, no

 

[Tarkus]

the flat model of the trunk-cono did it without problems while the side cover, as seen in the figure, no

the image does not help much.. .
Have you checked the match between the set thickness and the molded thickness?
I'll send the file.

 

[davix84]

I checked the thickness, the first thing.