Hello Karsten,

Yeah, I had realised that it was not necessary to alter your sweep node;
but rather just use "Long" MODE on Max's original sweep node.
I've restored your node to "Short"

Also, it's not necessary to use getCurveSFrame, if sweep profile is remote from rails.
Please find nod file attached.

Now I need to index perpendicular threads.

Thanks for your help.
James