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OpenSCAD: minkowski on non-convex objects produces geometry errors
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| // with errors due to minkowski with non-convex objects | |
| translate([8, 0, 0]) | |
| difference() { | |
| cube([15, 15, 1], center=true); | |
| minkowski() { | |
| for (i = [-1 : 1]) | |
| for (j = [-1 : 1]) | |
| translate(5*[i, j, 0]) | |
| cylinder(10, r=1, center=true); | |
| cylinder(1, r=1); | |
| } | |
| } | |
| // individual minkowski - no errors | |
| translate([-8, 0, 0]) | |
| difference() { | |
| cube([15, 15, 1], center=true); | |
| for (i = [-1 : 1]) | |
| for (j = [-1 : 1]) | |
| minkowski() { | |
| translate(5*[i, j, 0]) | |
| cylinder(10, r=1, center=true); | |
| cylinder(1, r=1); | |
| } | |
| } |
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I don't see any errors with F6. The F5 preview is broken because you haven't set convexity in the minkowski. I think it should be 4 for that shape but anything above 3 looks OK.