I started using my 3D skills to improve GUI's and i made few knobs which i can share with you guys, you are intrested?
Ok guys, here's link https://www.mediafire.com/file/td4okx3moua80hd/FREE_KNOB_SET.zip/file
300x300, 128 frames.
@Christoph-Hart i made it in blander, this effect you can get by adding texture to roughnes in node editor.
Press J and copy whole content to Panel in new Project