Tom, sorry if not clear on what I was after, it (sweep) got twisted and should be as other side though as mentioned the profiles are deliberately non matching, so thought I had said enough and that was ok data wise.
the bit in the middle is obviously going to need to be done separately as I also mentioned, though to avoid confusion I should have taken the ‘double profile’ out from centre of it. I just did that bit by using the straight rail and profile either end of it.
Jeremy thanks, that worked,…new rule to remember, if it fails try selecting profiles from other end, AND IT WORKS.
Why is that and is this quirk still existing in V8 etc ?
So now with the profile missing brushing against the down finger, I can join and then boolean difference.
OH NOT AGAIN, it fails.
storyboard click twice to enlarge to full.
I do intersect and see oddities, both on good and initial bad sides,
and it intersects with side of down finger, yet profile drawn to miss.
so what to do for the oddities when they dont appear in the result of sweep1.
and if my profile misses why and what to do now ?
SWEEP1 TWISTED now ok but boolean Difference fails.3dm (2.2 MB)
and then I do each bit by bit, I remove the short segment of line and use blendCurve and then join the sweep1 results, I see dark surfaces, so flip them, then boolean difference AND IT WORKS.
5hrs fiddling about on it, one boolean Difference. I dread them.
SWEEP1 TWISTED now ok boolean Difference ok.3dm (2.5 MB)
HOWEVER ITS FAILED AS THERE IS NOW A THING STICKING OUT COMES AND GOES AS I ROTATE.
AND I CANNOT SELECT IT.