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Set screw hole's center over the bottom of box [right_edge, -extra_depth], // bottom right [right_edge, rotate_vector_sin * rail_depth] // top right [left_edge + height * rotate_vector_cos; [left_edge, rotate_vector_cos * rail_depth], // top right [left_edge + height * rotate_vector_cos, rotate_vector_sin * height], // top horizontal rib //} module make_surface(filename, h) { for (a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]) linear_extrude(height=a/h, convexity=10) projection(cut = true) surface(filename, center=true); } // XKCD (alt tags we don't need a hole, set this to zero. ShaftLength = 0; // [0:No, 1:Yes] ////////////////////////// //Advanced settings ////////////////////////// RingThickness = 5*1; DivotDepth = 1.5*1; MarkingWidth = 1.5*1; DistanceBetweenKnurls = 3*1; TimerKnobConst = 1.8*1; PI=3.14159265*1; KnobMajorRadius = KnobDiameter/2; KnobMinorRadius = KnobDiameter/2 * (1 .

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