Issue with bending mesh by using armature I'm a very new in Blender.
I'm modifying Universal studion template from this tutorial:
https://www.youtube.com/watch?v=MzzKW8qAkRE
I have a Mesh in the shape of the &quot;O&quot; letter. It looks perfect by it self.

But if it is connected to the Armature some bends appears on the letter surface:



I've tried to play with some mesh modifiers. But no luck - just messing the model.
I guess it might be something with surface properties but I'm not sure which one.


Would you please be able to help me to figure out what is causing the issue?
So let's say you want the letter to be deformed. In that case you can parent With Automatic Weight, your topology is good so it is supposed to get nicely deformed by several bones, so you don't have to reparent.
There are 2 main problems in your current file though:

The Subdivision Surface modifier was above the Armature. Put it below:



Your bones kept bending badly. So at first I tried to give some corrections in Weight Paint mode but wth? it didn't fix it. Actually it's because even though your bones are displayed as Octahedral you've segmented them (which you can only see if you display your bones as B-Bones), and you've only segmented twice the second bone, the one that mainly controls the letter. 2 is not enough, it will break the shape, so increase the value and it will work fine: