Added to Special Thread Gallery :O)

great!

One things that I have noticed, and that can be seen in this image, is a problem with sweeps, when the bengind angle gets too 'sharp',
such as in the top bend of the number '3'.
This may be a problem in general with sweeps, or is there a way to fix this?

Your curve must not makes knots!)
else some curious things can be arrive :)

I think that the only way for avoid that is being careful whith the path. Not like me! :-)))))
In the top of the "M" there are a bad surface too. I wanted to render it in Rhino and the result was a rare surface in "M" letter. Refine, refine.... :-)

Bye!

>>...a problem with sweeps, when the bengind angle gets too 'sharp', such as in the top bend of the number '3'.
>>This may be a problem in general with sweeps, or is there a way to fix this?

I guess it would be amazing if MoI was able to perform boolean or trim operation on object itself.
Petr

> I guess it would be amazing if MoI was able to perform boolean or trim operation on object itself.

It might be possible to do this eventually. But one big problem with checking each surface for creases in itself is that it is very time consuming.

- Michael

> This may be a problem in general with sweeps, or is there a way to fix this?

It's kind of a general problem with any type of operation that moves a distance away from a curve that is going around a tight bend, where the radius of the bend becomes less than the move distance.

Usually the way to fix it is to not do it... :) or you can also build your model more in pieces instead of trying to make it go through a tight bend all in one shot like that.

But you may not have to fix it in certain circumstances - if you are building the model for a quick sketch or rendering purposes then it is ok to have those self-intersecting pieces. But they can cause problems if you want to do further intersections to them later on, or try to manufacture those shapes with a CAM type system...

In this case of a fun quick sketch it seems to be fine not to worry too much about them.

- Michael