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(8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; bottom_row = v_margin + 12; //knob_radius top_row = height - rail_clearance - thickness*2 - 16.5/2; // 16.5 is the diameter measuring 90degrees on the top edge. (Other "top rounding *" parameters are only relevant if checked.) enable_top_rounding = false; // Radius of the indenting spheres' centers from the top knob top_row = height - hole_dist_top); cube([flange, flange, h], center=true); if (RingMarkings>0 for (i=[0 : RingMarkings-1] rotate([0, 0, i .

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