The Best Way to Cut Holes on Curve Surface in Blender (Quick Blender Tips) 

Nice technique. Boolean is much more easier but this one look way more better :) Thank you!

This indeed is a great technique for making circular cuts on a curved surface but i would like to mention one thing that while using loop tools for creating circles on curved surface , unchecking the flatten option is the best thing to do otherwise the circle you make will be flat i.e it will not follow the curvature present on the surface , looking forward for more content xiongdi❤

I have no loop tools when I right click on the diamond. There is nothing above "Vertex Context Menu". I guess its back to Boolean for this boy

for more options see Blender Secrets - Making Holes in Cylinders with decent Quad Topology

Love how simple and effective this is... will be using this from now on.. thnx!!

But you have some deformation around hole, is it ok?

nice

I realized that although you can make nice holes whith this method, but this also results some shading issues caused by minor deformations around the hole (and that is so even if i do some preparations such as inset, joining vertices etc). My method to partially avoid this is: 1.: the mesh must contain square-like faces (instead of a horizontally stretched rectangles). That means in case of a 1 meter x 2 meter cylinder with 32 vertices, that you must make 10 horizontal loops. 2.: you must make a bevel wich is almost a circle (instead a concave shaped bevel). You can achieve this if you set the shape of the bevel to 0.08. And the loop tool comes only after it. The end of this method is the same (inset, joining the vertices, subD, shade smooth). Unfortunately my method doesn't give perfect result either, but the final result is smoother, with less shading issues.

Thanks for showing your very helpful workflow.

Beautiful technique! Thank you for sharing!

Thank you for explaining the details of this clever technique. I am a new blender user and tried to punch a precise hole through a cylinder with knife project and "punchit" add-on. I hope to use your method for a much cleaner geometry.

is there a way i can mirror the carvings?

Thank you for making this ❤

Thank you! What should we do to make hexagon hole for nut?

This is great and works perfectly for a circle. I’m guessing there isn’t a good solution for making any random shape? I have a model with some other surfaces pushed through it so I could run a Boolean but it totally messes up the mesh

Thank you. Yeah, I'm certainly going to be adding this method to my tool box. Using a shrinkwrap modifier against a clean duplicate of the cylinder also works to heal the effects of a flattened loop-tool circle, and the scaling from the center vert. Although, it may be necessary to create a vertex group that covers not just the circle to be cut, but some of the verts in the surrounding area. subscribing 👍

Many thanks for this, it really helped me out.

I understand what you are going for here, but what if you want to do it in a non-destructive way, then you need the Boolean modifier, in that case this won't work, besides even with the Boolean modifier, after you apply it you can always connect the vertices, as long as there is good topology then I don't see the problem with using the Boolean modifier.

Amazing lesson many thanks for help

Wenbo Zhao tnx a lot dude and nice voice. Greeting from Serbia(Balkans)

这个方法很棒啊！谢谢老师！niubility！我要肝完你的所有tips

Thank! Do you think you could possibly do one on reasons why using boolean to cut an object evenly in half doesn’t always work

Nice one!

Interesting, I have seen similar before by projecting a Circle on the the surface. So fundamentally we need to get a Circle onto the surface of our Cylinder, at the correct position and scale, and the vertices of those circle needs to be close to the some of the vertices on the originating mesh. Then we ned to ensure that all our circle vertices are connected into nearby original mesh vertices to avoid N-Gons etc. Still pretty tricky to retain symmetry, avoid deformation of the original mesh. And I do not see any realistic method to resize after the operation. But its understood to be the correct way to retain correct geometry, that Booleans mess up. Thanks also for the tip on the Mesh Circle tool Add On.

That helped a lot, thank you!

How do you proceed to add all holes at the same time? With that one parameter from the first one?

muchas gracias por compartir tu conocimiento

thanks i hope it works

Thank you!

Nice) How to unwrap holes right way if I use "follow active quads"?

thank you

I've rewatched this video nine times and everytime im more confused and frustrated, I get lost after the shortcuts, they dont do what they do for you what they do for me

For me the problem arises when I've to create the hole, bevel it and then subdivide it. Those vertices get grouped and it doesn't look good with subdivision. You have any workaround for this?

Please do more... ❤