Hi all, I'm making good progress implementing flexible parts in my LDCad



But now I'm wondering if I chose the right default orientation (namely positive z direction). I did notice most donor shapes (e.g. 166.dat) use y, but I felt that was 'weird' when I started out, but now I'm wondering if z is really all that great.

So my question to the part modeling experts is what are the considerations for choosing an (internal) base orientation for (flexible) parts.

Also what's a logical part center to use as a default (starting point, center of arc, etc) ?

Any thoughts / pointers would be appreciated.