I’m building a metro-rail track system in Blender using Geometry Nodes (Blender 4.2.16).
The rails and clamps are separate mesh objects in my scene.
Inside my Geometry Nodes setup, I use:
Object Info → Instance on Points to duplicate the rail along a curve
Then Translate/Rotate/Scale Instances to orient and position them
Everything is driven by a Curve to Points / Resample Curve workflow (or similar)
The rail itself duplicates correctly along the path
The clamps DO NOT duplicate at all
Even though the clamps exist as objects, and even though I tried applying Array modifiers, Translate Instances, etc., they never appear repeatedly along the rail. They either stay at the origin or appear only once.
If you check the spreadsheet, how many instances appear when you look at the clamps (the output of the “rail holders” frame) in a viewer node? As many as you’d expect, or not? If there are fewer than you’d expect, then that means you’re not creating as many instances as you want to. If there are as many as you’d expect, that means you’re creating as many instances as you want to, but (probably) they’re all in the same place.
So what do the points you’re instancing on look like? That could help identify the problem.
tbh if you really want someone to help you - i would provide a blend file - maybe a simplified one so we don’t have to guess around.
Or you just search for general hints/tips to debug geometry nodes. Which is mainly using spreadsheet and viewer node. Then you see what is the output of every branch you made.
That’s a really good suggestion but unfortunately as new user I can’t attached blend file here although if you can really help we can contact on other platform.
The rail itself duplicates correctly along the path
The clamps DO NOT duplicate at all
