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I am new to Blender and I’m working on a concept figure for a project.

I am trying to take a cylinder, put a 10x10 grid on the top face, and cut the cylinder into a bunch of pieces based on the downward extrusion of that grid. The goal is to change the material properties of each part of the cylinder. The cylinder represents a laser for context. How would I go about doing this? Thanks, any help is appreciated.

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  • $\begingroup$ do you have a reference image of what you want? Maybe the Knife Project tool is what you need, you can project a grid onto the top face then extrude $\endgroup$
    – moonboots
    Commented Jun 1, 2023 at 5:28

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It would perhaps be easier to split one end of your cylinder in the flat, while Alt M Mesh > Split > Faces by Edges still does the right thing, and then extrude it to form the composite solid.. (or use an Edge Split and/or a Solidify modifier):

enter image description here

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  • $\begingroup$ How did you do that last part where you scale it and introduce spaces between the parts? $\endgroup$
    – Randalox
    Commented Jun 1, 2023 at 13:31
  • $\begingroup$ Hi, @Randalox! That bit was really just for illustration.. the steps are P > Separate by Loose Parts, Object > Origin > Origin to Geometry, and set the Object Mode 'Options' in the header to Transfrom: Affect Only > Locations. Then a Scale in XY (S Shift-Z) in Object Mode will spread the parts' locations without scaling their meshes. You could use that as a modelling tool, by Ctrl-J joining all the objects back together again, and resetting the origin to something sensible. $\endgroup$
    – Robin Betts ♦
    Commented Jun 1, 2023 at 15:28

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