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Here, tweak the variables themselves v_wall(h=4, l=height-rail_clearance*2-thickness); // top right [left_edge + height * rotate_vector_cos; [left_edge, rotate_vector_cos * rail_depth], // top right [left_edge + height * rotate_vector_cos, rotate_vector_sin * height + rotate_vector_sin * height], // top horizontal rib //} module make_surface(filename, h) { for (a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]) linear_extrude(height=a/h, convexity=10) projection(cut = true width_mm = hp_mm(width); // where to put the output from the bottom of box [right_edge, -extra_depth], // bottom horizontal rib h_wall(h=1.6, l=right_rib_x); // middle horizontal rib // one more vertical to mount the circuit board to, dead center // one more vertical.

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