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Module external_direction_indicator() { if(pointy_external_indicator == true } module rail(height) { difference() { union() { cube([board_width, board_height, thickness]); cylinder(thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cube([cutout_width, cutout_height, thickness+3]); cylinder(h=thickness+standoff_height+3, r=hole_radius, $fn=360); vertex 0 -2.5 6.7 vertex 2.5 0 6.5 vertex -2.07867 1.38893 6.7 vertex -0.956708 2.3097 6.5 facet normal 0.114147 -0.100183 0.9884 vertex 0.221399 7.2243 6.88859 facet normal 0.362608 -0.422016 0.830914 facet normal 0.952735 -0.286109 0.102165 facet normal 0.0921987 -0.173186 0.980564 facet normal.

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