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Streets of the rail + a safety margin // margins from edges v_margin = hole_dist_top*2; output_column = width_mm - thickness*2; union() { cube([board_width, board_height, thickness]); cylinder(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 -8.99167 3 vertex -7.4763 -4.9955 3 vertex 6.35807 -6.35807 3 vertex -8.82707 1.75581 3 facet normal 9.127763e-01 4.084597e-01 3.193598e-04 vertex -9.090395e+01 1.020222e+02 1.055000e+01 facet normal 0.584886 0.805022 0.0992381 facet normal -0.630808 -0.768363 0.108162 facet normal -0.0974082 0.989348 0.108177 facet normal -0.0819649 0.0819028 -0.993264 vertex 3.03882 3.62229 21.7538 facet normal 0.499988 -0.866033 4.3475e-06 facet normal 0 -0.956942 -0.29028 vertex 0.800782 3.26571 14.9643 vertex 0.800782 3.26571 11.5393 vertex 0.4 3.34544 14.112 facet normal 0.560077 0.682457 0.469645 vertex 7.38912 4.93725 5.07603 facet normal -9.877527e-001 -1.560276e-001 0.000000e+000 vertex -4.866983e+000 5.072126e+000 9.983999e+000 vertex 5.669006e+000 2.916544e-001 9.983999e+000 vertex 6.868123e+000 1.745502e+000 9.983999e+000 vertex -4.873291e+000 -2.885563e+000 2.496000e+001 vertex -3.615306e+000 -4.376429e+000 9.983999e+000 vertex -6.260352e+000 -3.300258e+000 9.983999e+000 vertex -3.686406e+000 4.246111e+000 1.747200e+001 facet normal -0.780265 0.0331712 0.624569 facet normal -0.0729404 0.0676785 -0.995037 facet normal -8.884534e-01 4.589668e-01 3.223788e-04 vertex -1.040295e+02 1.016538e+02 1.855000e+01 vertex -9.500882e+01 1.056905e+02 1.855000e+01 vertex -1.040294e+02 9.614870e+01 3.455000e+01 facet normal -0.00746153 -0.0992384 0.995036 vertex 4.9862 -6.2525 19.9501 facet normal 0.499981 0.866036 -2.49143e-05 facet normal 2.096561e-001 3.668986e-001 9.063276e-001 vertex -4.330786e+000 -3.518775e+000 2.491820e+001 facet normal -2.588559e-001 -1.152636e-003 9.659153e-001 vertex 5.252728e+000 -1.044818e+000 2.494118e+001 facet normal 0.880764 -0.468299 0.0703603 facet normal -0.468349 0.312814 -0.826315 vertex -2.27697 -1.77649 18.9096 facet normal 0.0376634 0.382434 0.923215 vertex 8.98903 -0.111422 3.82299 facet normal 0.977432 -0.186453 0.0993111 facet normal -0.840784 -0.532182 0.0993189 facet normal -3.566057e-01 -9.342550e-01 -0.000000e+00 facet normal 0.996728 0.0397752 -0.0703603 facet normal -9.996069e-01 2.803745e-02 0.000000e+00 vertex -9.435317e+01 9.365127e+01 4.255000e+01 facet normal 0.757711 -0.648786 0.070359 facet normal 0.938724 -0.284757 0.194192 facet normal 2.476763e-15 -5.590509e-15 1.000000e+00 facet normal 0.392551 0.734383 0.553702 facet normal 1.995070e-01 6.332426e-04 9.798962e-01 vertex -1.077753e+02 9.725134e+01 8.883403e+00 facet normal -1.397736e-01 -9.901835e-01 0.000000e+00 vertex -9.975979e+01 9.211223e+01 1.855000e+01 vertex -1.001369e+02 1.055465e+02 3.455000e+01 facet normal -0.881857 0.471366 -0.0119411 facet normal -2.498261e-001 -4.371959e-001 8.639715e-001 vertex 2.784941e+000 3.155970e+000 2.491820e+001 facet normal 0.694966 -0.464389 -0.548968 vertex 3.10499 -1.28613 18.4724 facet normal -0.115649 -0.00128232 0.993289 vertex 5.77925 4.28385 7.9151 facet normal -0.090682 -0.920074 0.381103 facet normal -0.977435 -0.186464 0.0992581 facet normal 0.880763 -0.468301 0.0703597 vertex 10.8957 3.36088 0.18985 facet normal -2.880153e-004 -5.040268e-004 -9.999998e-001 ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB.

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