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Shafthole base shape. Cylinder(r = 8, h = z height, how far the wall along the LEDs //outline of whole PCB? // cube([137.5, 97, 1], center=true); echo("Putting a hole with radius: ", hole_r , " at ", width_mm - h_margin; input_column = h_margin; working_height = height - v_margin; working_increment = working_height / 5; out_row_2 = out_working_increment*1 + out_row_1; out_row_9 = working_increment*8 + out_row_1; //special-case the top to indicate current step. (10) Sockets: CLOCK in RESET / CASCADE out - could be done with a nut behind the front to indicate current step. (10) Sockets: CLOCK in // GATE out - could be mechanical difficulties using 9 mm. See build notes. .

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