How to bend/create nice angle without warping model So I am doing some self learning by attempting to copy a phone stand that I have.
I am really close but I am not sure I understand how to create that triangle followed by a really nice bevel.
I have tried just doing a rotation but because it rotates by the center of what I select it just warps the model really badly.
Here is what I have so far:

Thingiverse model
Here is a picture of what I am attempting to copy. (I am not worrying about the bottom angle/bend)
As you have V angles, you should not have modeled rectangular angles in the first place, it's better to first follow the whole shape:

Extrude:

Give it a Solidify modifier (Complex mode to give it even thickness):

Apply the modifier, round the angles with bevel operations:

Correct the topology with the knife (K to activate, Z to cut through), dissolve unwanted edge loops with CtrlX:

Give your object some Boolean modifiers in order to cut of the holes, etc: