Sci-fi panel substance designer (free)

Get it free https://gumroad.com/l/TwTTj
Other free textures:
https://www.artstation.com/artwork/QyV1l
https://www.artstation.com/artwork/GNYmB
https://www.artstation.com/artwork/GlLvB
https://www.artstation.com/artwork/QvKbr
https://www.artstation.com/artwork/qkr4e
https://www.artstation.com/artwork/vWeg6
https://www.artstation.com/artwork/3Y9wm
https://www.artstation.com/artwork/NPY8q
https://www.artstation.com/artwork/1Dyeq