Hi Lemo,

> The offset function is 'subdividing' smooth curves as well, the result
> is that the 'forced' edges are lost and the artifacts are visible again.

I don't quite understand - you mentioned using the same curves, but are you doing another offset? That means making a new curve... If so if you can post your new curves with the new offset that might help me figure out what is happening. But in general I'd recommend doing the splitting after you have done all the offsets.


> If I create new curves following the offset generated ones and add points
> where I would like to force edges according to the underlying original, then
> it works again. But that is a LOT of work.

Really? Over here it only took me about a minute's worth of work to adjust your original model so that it lofted well.


> I downloaded TSplines last night and that deals with this problem perfectly.

Great, I'm glad you have found a good solution!

- Michael