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I'm trying to model a bunch of fiber-optic cables, as seen in many images: with the end of the cable lit.

The cables per se are easy to model: A bunch of curve circles spread around a bigger circle, extruded along a curve.

AFAIK there is no way to control the curve caps, so I used the original cable "slice" from the former paragraph and instanced on the end of the curve with the Endpoint Selection node.

The problem is that I cannot align the rotation of the cap to be aligned with the end of the curves:

enter image description here

I tried Curve Tangent with Align Euler to Vector, and now it faces correctly at the end of the curve, but the rotation along the path doesn't match:

enter image description here

Help me, BlenderExchange! :-) Thank you all

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    $\begingroup$ If you go via Curve to Points, that node hands you a rotation: see here $\endgroup$
    – Robin Betts
    Commented Mar 24, 2022 at 17:13
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    $\begingroup$ You, sir, are a genius :-D Thank you! Works ferpectly :-) It would be great if you can answer the question to flag it as such. $\endgroup$
    – drmad
    Commented Mar 24, 2022 at 17:39
  • $\begingroup$ np. This is almost a duplicate question.. just UV the original's answer, if it helped. $\endgroup$
    – Robin Betts
    Commented Mar 24, 2022 at 17:59

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