For some reason, this Mesh won't let itself be weight painted. No matter what I do, I can't really paint more weights on it, specially not in face mask mode which I kinda need.

Does anybody know why?

Sample file: https://a.pomf.cat/wtlzlh.blend


1 Answer 1


I see two reasons:

  • Mode is face selection masking: so you need to select faces (A or right click select)

  • The setting is to subtract and there is no weight to subtract

enter image description here

  • $\begingroup$ Sweet! Do you have any idea why it won't paint when the "limit selection to visible" setting is switched? $\endgroup$
    – Marcel Doe
    Apr 27, 2017 at 6:56
  • $\begingroup$ Yes, because some normals are inverted (back facing) $\endgroup$
    – lemon
    Apr 27, 2017 at 6:58
  • $\begingroup$ I see, do you know how I could invert them? $\endgroup$
    – Marcel Doe
    Apr 27, 2017 at 7:00
  • $\begingroup$ To do it easily... no. Doing it face per face... : (. This often occurs with garments (because what is front becomes back when you fold it) and this is not so easy to handle. $\endgroup$
    – lemon
    Apr 27, 2017 at 7:04
  • $\begingroup$ Oh wow, I see. Thanks! This was a really really nice learning project for me and you helped me finish it! :) $\endgroup$
    – Marcel Doe
    Apr 27, 2017 at 7:07

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