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L, th=thickness) { // slider pot slit // make a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin; working_increment = working_height / 6; // generally-useful spacing amount for vertical columns of stuff working_height = height - v_margin; working_increment = working_height / 6; // generally-useful spacing amount for vertical columns of stuff center_adjust = 5; //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 col_left = thickness * 1.2; right_rib_x = width_mm - col_right - thickness; // draw panel, subtract holes union() { cube([board_width, board_height, thickness]); cylinder(thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius.

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