scaling a group of bones without them scaling

[lbruno]

hi all,

 

I have a bone that is a parent to several other bones. I want to be able to scale the parent bone without the child-bones scaling. I want them only to translate (expand).

Is there a way to "lock" the scaling of bones? Do I need to make an expression or is there some constraint to do the job?

 

This is for my face-setup. I want my lip-control bones to not scale so that the lips always stay the same thicknes when I scale my mouth bone (the parent).

 

thanks.

[Fuchur]

hi all,

 

I have a bone that is a parent to several other bones. I want to be able to scale the parent bone without the child-bones scaling. I want them only to translate (expand).

Is there a way to "lock" the scaling of bones? Do I need to make an expression or is there some constraint to do the job?

 

This is for my face-setup. I want my lip-control bones to not scale so that the lips always stay the same thicknes when I scale my mouth bone (the parent).

 

thanks.

 

I am not aware of a lock for that.

However you could do it with a workaround:

Use an additional null-object (for instance).

 

If you constraint that to the bone using only a Translate-to-Constraint, drop the bones you dont want to scale on it (to create a hierachical order below the null-object, not the root-bone) the problem should be solveable.

 

See the example-project attached to this post. (you can add constraint in a pose too, if you want it to stay with the model for other chors too, etc.)

 

See you

*Fuchur*

rigging_scale_problem.prj