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I have made some nails on fingers. Now the fingers are parented to the bones and are animated. The nails I also parented to the top finger bone, so the nails also move. But the bottom of the nail moves upwards from the 'skin'. So I tried surface deform. But with that the top of the nail also deforms with the skin, which it shouldn't.

So, how can I apply the surface deform only for some part of the mesh (eq the bottom of the nails)?

The nails are just 2D mesh with Solidify enter image description here

file:

enter image description here

enter image description here

enter image description here

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  • $\begingroup$ The nail is rigid: it doesn't need to deform. Could you consider just vertex-parenting the nail to the skin? $\endgroup$
    – Robin Betts
    Commented Jul 4, 2022 at 16:04

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You can specify a Vertex Group to include or exclude from the SurfaceDeform modifier.

So I took the 'nail ring.001' object, chose a group of vertices in Edit Mode, and created a new Vertex Group that I renamed "nail base":

enter image description here

All of these vertices got a default weight of 1.000. I could have gotten fancier to Weight Paint around the transition, perhaps if needed for perfection.

I then used this in the Vertex Group property of the SurfaceDeform modifier. Where before it was blank (implying all vertices of the nail would be deformed):

enter image description here

Now instead only the vertices specified would be modified:

enter image description here

Here is a copy of your modified file:

As a fan of the USA series "Saturday Night Live" (comedy), I saw the name of your file and though of the "Church Lady" skit where she yells SATAN!.

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