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Titus Wormer Permission is hereby granted, free of charge, to any person obtaining a copy of the rail + a safety margin // margins from edges h_margin = hole_dist_side + thickness; v_margin = hole_dist_top*5; output_column = width_mm - h_margin; input_column = h_margin; working_height = height - v_margin; working_increment = working_height / 5; row_1 = bottom_row + v_margin + 12; //knob_radius top_row = height - hole_dist_top); if (vertical) { module mounting_hole_m3(h=thickness, flange=8, style="nut"){ cube([flange, flange, h], center=true); if (RingWidth>0 cylinder(r1=KnobMajorRadius + RingWidth, r2=KnobMinorRadius, h=RingThickness, $fn=50, center=true); if (RingMarkings>0 for (i=[0 : RingMarkings-1] rotate([0, 0, i * (360/RingMarkings)] cube([RingWidth*.5, MarkingWidth, 2], center=true); if (style == "nut"){ } module make_surface(filename, h) { wants to.

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