When sculpting, my brush changes from Add to subtract and viceversa if i sculpt in some places of my mesh. How like that?

enter image description here

As it seen in the image, it switches or changes to add or subtract in some places, so everytime i have to press ctrl and stop pressing it because this thing. In some places flattens, in others just add, and it's absolutely annoying, can't sculpt in peace.

Maybe i pressed some "autocontrol-switch option" somewhere, or maybe not.

What's happening?

  • 2
    $\begingroup$ Check your normals: if inverted the sculpt tool will invert his function. $\endgroup$ Oct 20, 2017 at 7:18

1 Answer 1


If you try to enter Sculpt Mode with your model, you can see the warning message Object has non-uniform scale, sculpting may be inpredictable .

enter image description here

  1. First, select the object in Object Mode and then Apply the Scale by Ctrl+A > Scale.
  2. Then go into Edit Mode, select all by A and Make Normals Consistent by pressing Ctrl+N.
  3. If normals are now inverted, invert them back by W > Flip Normals.

Then your sculpting tool should work equally on the whole model.


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