How can I bevel the edges of a cylinder with multiple faces?

I have a cylinder that I have used the Boolean Modifier to take out some shapes. This has caused multiple faces to be generated.

I have tried to reduce the amount of faces on a cylinder with dissolve faces and a few other options, but can't get to the point where I can bevel the edges of this cylinder easily.

Is there a way to achieve this?

I would remodel it for better quad topology. There's a pretty nifty built-in addon called LoopTools. Enable it via menu Edit > Preferences > Add-ons > LoopTools

Now you have prettier topology and smoother bevels

If you tinker around you can also come up with prettier topology without ugly N-Gons by starting with quads from a Plane object and forming it into a circle then moving around vertices.

• This looks great! The only problem I have is when I press i to inset faces the second time — on this step: "Select the mouth area and press i to Inset Faces then B to turn off Boundary then LMB" The inset faces feature insets every individual face, not all of them together as it does in your gif. Is there a way to group them together that I'm missing?
– Lxxj
Commented Jul 31, 2023 at 14:49
• Press 'i' again to alternate between individual and not. Or in the pop up window, uncheck the 'individual' option Commented Jul 31, 2023 at 15:50
• @Cornivius This doesnt work, and I'm not sure why... Same with the pressing B
– Lxxj
Commented Jul 31, 2023 at 16:02
• Ror rigid bodies ngons on a flat surface are workable, you just need to divide them so they are convex (so that a straight line connecting any two points within the ngon will never go outside the ngon), then you inset those ngons to create a buffer of quads, and preferably inset again to have a double buffer of quads. Then Subdivision Surface + smooth shading won't be affected by ugly triangulation of ngons, and angle-limited bevel should leave ngons alone as well. Commented Jul 31, 2023 at 16:22
• @HarryMcKenzie oh, quad based topo is definitely better, just saying ngons are often good enough :P. With ngons it can be tricky to do this double inset, whereas with quads the entire space is available for bevel/subdiv. Commented Aug 2, 2023 at 6:32