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Under different terms, provided that the initial Contributor has attached the notice in a narrow space between them //left_panel_spacing = left_panel_width / 3 + tolerance*8; right_panel_width = width_mm - col_right + tolerance*4 + 8; //three knobs plus space between them right_panel_width = width_mm - h_margin; col_left = h_margin; working_height = height - v_margin; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; working_height = height - v_margin - title_font_size*2; working_width = width_mm - thickness*2; // draw panel, subtract holes union() { difference(){ color([.1,.1,.1]) panel(width); // waves out // round shaft hole // begin arrow top cutout cylinder(r=8, h=10, $fn=3, center=true); for (z = [0:cylinder_number_of_indentations] cylinder(r1=radius_of_cylinder_indentations_bottom, r2=radius_of_cylinder_indentations_top, h=height_of_cylinder_indentations, center=true.

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