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Top left [left_edge, 0], // drop to axis [left_edge, -extra_depth], // bottom horizontal rib h_wall(h=4, l=right_rib_x); // middle horizontal rib // bottom horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle-bottom h rib pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // Create a round shafthole base shape. See knob_base(). Rotate([0, 0, 180] // Left side: meta-step controls // step rotary switch? Special: this needs a _big_ knob, these are some setup variables... You probably won't need to call out for.

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