OpenSCAD Question on bezel (lemmy.world)

submitted 1 year ago by nydas@lemmy.world to c/ergomechkeyboards@lemmy.world

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I created a 2d surface that I can perform a linear extrusion on, however the result it obviously a hard edge on the extrusion. I would love to be able to add a bezel - either rounded or at 45 degrees. Is there an easy way?

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[-] azdle@news.idlestate.org -1 points 1 year ago

There's lots of ways to round things or chamfer things. Coming from an extruded shape, a basic chamfer is pretty easy, you can do two different extrusions, one a bit shorter than your final piece and one full height, but offset inward a bit, and then hull them together:

module shape() {
    square(10, center = true);
}


hull() {
    linear_extrude(8)
    shape();

    linear_extrude(10)
    offset(delta = -2)
    shape();
}

Though, because of the hull, this will only really work with fully convex shapes. Doing this for shapes with concave features is harder.

[-] azdle@news.idlestate.org -1 points 1 year ago

For rounding, you can do the extrusion, but with it a bit smaller in every dimension, then minkowski with a sphere (or a different shape if you don't want all the edges rounded), but it's tricky to get right:

module shape() {
    square(80, center = true);
}


minkowski() {
    linear_extrude(80)
    shape();

    sphere(r = 20);
}

this post was submitted on 20 Sep 2023

1 points (100.0% liked)

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