(See below for picture)
I have the following two problems with OffsetSrf:
I've found that with my object, I have to explode it into pieces and offset small groups or individual pieces. I also find that choosing the order makes a difference as on a couple of cases the command has not worked properly and I get open ends or I get totally erroneous results;
I end up with a large number of isocurves.
I have upgraded to the latest version of software, but is there any known bug or 'personality' with this command that I should be aware of
Up to now I have been creating the object with walls of zero thickness. I've added each branch by merging a newly created branch with the existing structure, trimming off the unwanted portions (including the internal pieces as I want the whole structure to be hollow) and then filleting the join. I was intending to wait until the very end before using OffsetSrf to give the walls a thickness.
is there a way to reduce the number of isocurves after OffsetSrf? Rebuild doesn't work. The only option seems to be to explode the whole thing, select the pieces that have the large number of isocurves, rebuild those pieces and somehow re-join everything;
is my abovementioned process okay, or should I add thickness as I go?
The following picture shows my model after having used OffsetCrv (doing it piece by piece).