Theres a weird red line on the thing i made, and painting over it doesnt get rid of it, i really want it gone
This is the symmetry line / plane, you can turn it off in the symmetry menu.
But you turned it on yourself !
              
              
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          Oh my goodness thank you, i completely forgot i did that and thought i had turned it off!
              
              
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          Try adding a tube across it and making the tube the normal color, flatten it.
I joke
