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Rail(height) { difference() { 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); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=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 -9 4.51215 vertex 0 7.10284 6.88658 facet normal -4.792339e-001 -8.386592e-001 2.588158e-001 facet normal 4.942504e-001 8.649388e-001 8.716282e-002 vertex -3.364450e+000 -3.896753e+000 2.470218e+001 facet normal 0.877371 -0.466811 0.110936 facet normal 0.815356 0.435831 0.381112 facet normal 0.878615 0.0865339 0.469624 facet normal 8.379959e-001 5.456765e-001 0.000000e+000 facet normal -9.991312e-01 4.167355e-02 2.542647e-04 vertex -9.019230e+01 9.900145e+01 4.255000e+01 facet normal -0.678279 -0.122595 0.724506 facet normal 0.880762 0.468302 0.0703604 facet normal 0.952737 -0.286094 0.102192 facet normal -0.703598 0.707106 -0.0703595 vertex -8.20983 5.40668 1.5173 facet normal 0.634341 -0.773053 -1.43199e-05 facet normal -0.388724 0.815359 0.429049 facet normal 0.0822176 -0.0560551 -0.995037 facet normal 0.828719 0.0816185 0.553682 facet normal -4.325091e-001 7.407266e-001 5.140622e-001 facet normal 0.0808284 -0.0827209 0.993289 vertex 1.06427 7.18483 7.92316 facet normal -5.035335e-001 -2.241907e-003 8.639728e-001 vertex 4.159094e+000 -1.480304e-002 2.491820e+001 facet normal 0.112087 -0.551317 -0.826732 vertex 1.10704 -2.68091 18.9333 facet normal -0.03481 -0.996914 0.0703601 vertex -6.36501 -7.83508 0.0491304 facet normal -0.000195511 0.116119 0.993235 vertex -7.37473 0.0747576 6.86461 facet normal -0.115076 0.00068584 0.993356 facet normal 0.0813397 0.0812122 0.993372 vertex -4.58534 4.28788 7.81694 facet normal -9.921821e-01 -1.247984e-01 2.725461e-04 vertex -1.045430e+02 9.820243e+01.

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