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Greatest extent permitted by, but not also under the smaller board, for convenience Resistor footprint could stand to be even. Odd values are -=1 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); cube([cutout_width, cutout_height, thickness+3]); cylinder(h=thickness+standoff_height+3, r=hole_radius, $fn=360); vertex 0 -5.37835 22.0001 vertex 3.80307 -3.80307 22.0001 vertex 3.84796 -3.74837 22.0001 vertex -3.84796 -3.74837 22.0001 vertex 3.80307 3.80307 22.0001 vertex 5.25446 -1.11698 22.0001 vertex 5.28194 0.978841 22.0001 vertex 2.98805 -4.47193 22.0001 vertex 2.92564 -4.50529 22.0001 vertex 5.27501 -1.04926 22.0001 facet normal -0.114152 0.990969 0.0703601 facet normal 0.0285886 0.0942435 0.995139 vertex -6.90035 -2.96676 6.0001 facet normal -0.598708 0.491352 0.632552 vertex -7.27387 4.86024 5.33536 facet normal -0.992162 0.101047 0.0735128 vertex -2.95564 -4.03376 21.7809 facet normal 3.609359e-15 -2.925470e-15 1.000000e+00 facet normal 0.875976 -0.471404 0.102197 vertex -4.71011 -0.41258 21.7538 facet normal 0.880763 -0.468301 0.0703597 vertex 10.8957 3.36088 0.18985 facet normal -0.195077 -0.980788 0 facet normal 0.338932 -0.181159 0.923205 vertex 5.07946 -7.60195 3.76384 vertex 4.18257 7.92022 3.82299 vertex -8.83147 -1.71116 3.82299 facet normal 0.0694748 0.705391 0.705406 facet normal -0.748167 -0.309905 0.58669 facet normal -0.223044 -0.417286 0.880979 facet normal 0.0369052 0.124337 0.991554 facet normal 0.0822199 0.0560555 -0.995037 vertex -8.0879 -5.8736 0.0420134 vertex -8.15582 -5.767 0.0397416 facet normal 0.479355 -0.871971 0.0994281 facet normal 0.0822199 0.0560555 -0.995037 vertex -9.61887 -3.06254 0.0491304 facet normal -9.052805e-01 -2.848077e-03 -4.248047e-01 facet normal -0.459965 -0.538537 0.705982 facet normal -0.164793 -0.491615 0.855078 vertex -7.16112 0.632185 7.08096 vertex -4.57828 -5.3829 7.06725 facet normal -1.425907e-01 2.870850e-03 9.897776e-01 vertex -1.076581e+02 9.665134e+01 1.149165e+01 vertex -1.074910e+02 9.725134e+01 1.151572e+01 vertex -1.073615e+02 9.695134e+01 1.152727e+01 facet.

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