Hi Pilou,

> This is not a 3D PDF with rotation in 3D space ?

No, it's a 2D PDF, meant for printed output.


> Seems there is a little quirk! ;) (tested on Adobe Reader 8 )
> who seems not exist on your image!

Hmmm yeah like Marc mentions above that looks like a glitch with Adobe Reader 8 on the miter join between thick short segments. I'll see about setting the outline to have round miter joints which should then avoid that.

It seems to have been tuned up in later versions of Adobe Reader too.

- Michael