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I'm quite the beginner with blender (just finished the donut) and I wanted to make a 3D replica of a radio that I have, but I have no idea how to make the little holes properly that it has in it.I assume the best way to make it is with the boolean modifier but it takes my pc like 30 seconds to calculate. Is there a better way to do this?

outcome of using boolean operator

These are my modifier settings:

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You could fake holes with normal or bump maps, but if you want to create real holes, create a plane, subdivide, select all except the borders:

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Press CtrlB to bevel the vertices (go into the Operator box to select Vertices):

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If you want more than 4 vertex holes, increase the amount of Segments and choose Shape > 1 to make them round:

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In Face Selection mode, select one face and press ShiftG > Polygon Sides to select all the similar faces:

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If you ever change the holes size, choose Transform Pivot Point > Individual Origins. When you're good, press i twice to inset each face:

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Extrude down a little bit, then again twice, then give it a Subdivision Surface and Shade Smooth:

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