Hi steve,

> here is a file, the object on left is my master, I used
> Transform-> copy to make the two copies on the right,
> when I try to boolean-union them , the bottom petals
> on the right most fleur disappear.

Something appears to be damaged in the trimming boundary of that right-most fleur in your original master object.





See that kind of odd missing triangle there, something is messed up in the trimming boundary there, so that fleur will need to be replaced, maybe something like delete the surface and mirror the other good side over.

I'm not sure exactly how it got messed up in the first place though, your surfaces seem to be all ok in that area and it looks like you may have run into some kind of bug in the booleans there. I'll investigate it some more.


> a small bulge forms where the ends meet, if I design things so the
> ends come together has close has possible, will that reduce the
> bugles that form? or is it just a side effect of using stretch?

I'll need to see the actual bulge to really be able to give any advice on this part. But some types of bulges are a normal side effect of warping things to go around a curve - basically it works similar to an offset and when you offset something from a curve, in areas where the curve bends inwards it makes for a bunching type of effect.

- Michael