Hi Gunter,
If you show the curve points the the start point and next point should be inline and same for end points.
So if you mirror the object the join is tangent.
Hope this helps.
Barry
Hey guys been away for a while popped in to see where MoI is at, I see Pilou is still here :)
Sometimes the MoI basics work well and maybe forgotten I'm a bit rusty with MoI so forgive the delays.