Wouldn't a filled boss, by definition be a solid body?
Are you looking for a shell of a shape?
Tx a lot for your solution.
It is exactly what I want to get.
But how difficult SW is.
At first : if I change the angle of big circle, in my sketch 5 (90° instead of 145°, for instance), then, to knit the 4 surfaces screw 1 and 2, join 1 and 2 is more difficult, and I have to change the knitting tolerance to do it.
Yet, all surfaces are adjacent with same others parameters !!!
To thicken the surfaces don't work any more, because the edge, at each spiral.
I tried to thicken an endoskelet, outside of it : same problem. SW is unable to smooth an edge when thickening.
If I try to built the piece with sweep bosses, SW draws at first a solution (1 or 2 seconds of calculus), for the joining boss, but 10 minutes of active calculus, and SW goes again for 10 others minutes of calculus....
Btw, where can I post an obvious error of SW ?
Philippe, for SW errors, the best is to let you VAR know of them.
Knit, with the "try forming solid" checked.
There is also "Thicken", which does what one would think it does...thickens a surface in order to create a solid.