How do you make holes in a cylinder sharp using subdivision surface modifier? I am making high poly model for a gun using subdivision surface modifier, in the pic you can see the barrel with a hole in it but the control loops deform the curvature of the barrel as in it isn't round anymore. How do you make holes in a cylinder sharp using subdiv? Or you shouldnt use subdiv?
I've looked at a lot of similar questions on here, and it seems the only answer is to fill in your holes, then do your subsurf modifier and apply it, and then cut out your holes afterwards.