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Arpeggiator needs a _big_ knob, these are for steps only row_1 = bottom_row + v_margin + 12; row_2 = row_1 + vertical_space/7; row_7 = row_6 + vertical_space/7; row_3 = working_increment*2 + out_row_1; out_row_4 = out_working_increment*3 + out_row_1; rotary_knob_row = top_row - 30; left_rib_x = thickness * 1; right_rib_x = width_mm - 9.5/2 - right_rib_thickness - tolerance; // rib + half a jack col_right = width_mm - 10 - center_adjust; // build up seven rows; middle one unused row_2 = row_1 + v_margin + 12; //knob_radius top_row = height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff working_height = height - hole_dist_top); cube([flange, flange, h], center=true); if (Pointer2==1 cube([8, 3, KnobHeight], center=true); if (RingWidth>0 cylinder(r1=KnobMajorRadius + RingWidth, r2=KnobMinorRadius, h=RingThickness, $fn=50, center=true); if (style == "nut"){ // a hexagonal cutout (undersize to melt an m3 nut into // a hexagonal cutout (undersize to melt an m3 nut into // a round shafthole base shape. See knob_base(). Rotate([0, 0, 90 + sphere_indents_offset_angle + ((360 / sphere_indents_count) * z)] sphere(r = sphere_indents_radius, $fn = top_rounding_faces.

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