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I need to apply an image texture of an Armco barrier (guardrail) to a very long, flat-plane object in blender model. I don't know how to unwrap such a long object on to an image texture. The image texture is perhaps 5 feet but the Armco is, e.g., 500 feet. I believe there is a way to have a texture image repeat along the object but I can't figure out how to execute this. I only understand the very basics of UV unwrap, materials and textures so detailed explanation would be most appreciated Thank you.

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When UV unwrapping, space outside the 0,1 range is mapped back onto the texture as if with a modulo operator.

To help with the visualization you can check view->Repeat Image

enter image description here

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  • $\begingroup$ Thank you for your reply. I don't understand "outside the 0,1 range". When I unwrap the guardrail, which is much longer than the image texture, where should the long UV map be placed relative to the not-so-long image texture? $\endgroup$
    – G Lap
    Oct 13, 2021 at 6:32
  • $\begingroup$ You can scale your UVs outside of the default square area. These UV coordinates are expressed between 0 and 1, as left/bottom side of the square for 0 and right/top side for 1. Did you enable Repeat Image ? $\endgroup$
    – sybog64
    Oct 13, 2021 at 8:25

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