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How can I get rid of this when I move my bone? Because I would like it to only stretch, but not get bigger. I have stretch enabled in the ik panel. It's the thigh that has the stretch enabled on it and also the one that gets bigger.

Screenshot

Screenshot

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Normally, scale will use global coordinates.
You want to use local coordinates.

Tap N to bring up the properties panel.
Scale along the appropriate axis, such as Y.

In the example, I scaled (from her view) left arm the standard way.
You can see it inflates, like you mentioned.

Scaled her right arm using local properties instead,
along the Y-axis, so it stretches, but doesn't balloon out.

Scale

edit: OK, in response to the BlendSwap link you posted:
I've never used that rig before.

The website look nice, but loading in Blender gives me this:
Shorty

I assume it's a version mismatch. It's for Blender 2.74
You might need to ask the developer (nocemperor) about that.

I would try this instead: http://www.manuelbastioni.com/manuellab.php
because it uses a standard Blender bones rig.

Again, try to scale along one of the local axis
How to scale along the local axis of an object?

edit: Oh, I just realized it wasn't loading fully.
Trusted

It's better, but only loads Orange model, not Black or Blue.
Perhaps, because it's for an earlier ver of Blender.

If you'd still like to use that .blend file,
the other trick you can do is add a Scale Constraint to the bone.

Select rig > Pose Mode > click a limb.
Set it to the limits you need. To scale along Y axis:

limits

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  • $\begingroup$ But the thing is that i seen a rig that stretches the legs by moving the bone and it doesn't "Balloon out" blendswap.com/blends/view/81455 $\endgroup$ – bubsy Oct 23 '17 at 1:54
  • $\begingroup$ Check the edited answer, hope that clears up the confusion. $\endgroup$ – Doyousketch2 Oct 23 '17 at 10:35
  • $\begingroup$ You should provide your .blend file, deeper diving is required if this answer isn't enough. Are you the author of the rig you're using? $\endgroup$ – L0Lock Nov 18 '18 at 14:01

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