Bevel Curve Mesh modelling I'm trying to model the image of this control knob which has a curve to it.
I start off with a cylinder as shown in the example I've attached. select 4 vertices and make a face in the middle of the knob. But I also make another 2 faces left and right so I can make the bevel. When I select the edges and do make the bevel, as seen I'm getting some odd mesh result appearing. Is this the correct approach to model the reference image? 

Thank you.
Try dissolving the coplanar faces (the vertical side and the face on top of it). Worst case scenario you could do it with a boolean operation on a basic cylinder and the knob profile.