UV / Normal map problem ???

Question

Im finally done with my model and normal map, but i have another problem i just dont know how to solve. When I look at the model in blender everything works fine but after uplouding it to sketchfab the normal maps gets weird. Theres a box to check UV 0 or UV1. When I check UV0 only the back part of my gun has correct normals, when I check UV1 the front part is fine. But i cant have both at the same time.

https://sketchfab.com/models/8e5609ea987c4e52bc145e8b936af757

Answer 1 · 2018-08-20T16:39:33Z

Jonathan Lampel replied August 20, 2018 4:39pm

Ok, I haven't used UV0 vs. UV1 in Sketchfab, but it sounds like there are two separate UV layouts. To check, go to the UV Maps section of the object data properties and delete any layout that's not the main one:

Answer 2 · 2018-08-20T17:38:31Z

replied August 20, 2018 5:38pm

thank you very much, I didnt know you can have multiple UV Maps. Thanks for the quick response! You guys are amazing, I love this website!

Answer 3 · 2018-08-20T22:12:05Z

Jonathan Lampel replied August 20, 2018 10:12pm

Thanks Erik! Glad to hear both of those :)