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19 - Could make the walls; a little bit of margin } module rail(height) { difference() { difference() { // draw panel, subtract holes 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 -7.34398 6.86102 facet normal -0.683044 0.365094 0.63258 vertex -3.34779 8.08229 5.33536 facet normal -3.036606e-01 -9.527803e-01 -0.000000e+00 facet normal 0.243781 -0.297047 0.923219 vertex 5.7167 -6.89515 3.82299 facet normal 0.88472 0.22243 0.409628 facet normal -9.369149e-001 -4.172014e-003 3.495326e-001 vertex 4.064078e+000 8.060172e-001 2.480400e+001 facet normal -0.0815518 0.0820835 0.993283 vertex 5.39153 4.12931 7.87036 facet normal -0.0983915 -0.0148308 -0.995037 vertex -9.9163 -1.25272 0.048847 facet normal 0.262765 -0.491592 0.830236 facet normal 0.95132 0.288583 0.108209 vertex 1.13596 -5.71086 21.335 facet normal 3.533242e-16 -1.018103e-15 -1.000000e+00 facet normal -0.353597 -0.430898 0.830239 facet normal -0.840151 0.533182 0.0993109 facet normal -0.768445 -0.630708 0.108161 facet normal 1.600429e-001 -2.743735e-001 9.482117e-001 vertex 2.123724e+000 -3.645529e+000 2.494118e+001 facet normal 4.344161e-001 9.007123e-001 -0.000000e+000 facet normal 0.365098 0.683048 0.632574 facet normal -9.877526e-001 -1.560280e-001 0.000000e+000 vertex 3.252574e+000 6.251968e+000 9.983999e+000 vertex -1.925954e+000 -5.351777e+000 1.747200e+001 facet normal 0.243768 -0.297059 0.923219 facet normal -4.077532e-001 6.994046e-001 5.870013e-001 facet normal 0.0895168 0.0427047 0.995069 vertex -4.70605 8.15112 20.0916 facet normal -0.584816 0.805071 0.0992566 facet normal 0.479434 0.871941 0.0993106 facet normal -2.448724e-01 -6.746548e-03 -9.695318e-01 vertex -1.058445e+02 9.695134e+01 1.284327e+01 facet normal -0.631387 -0.769304 0.0975749 vertex -7.48323 -5.00013 3.82299 facet normal -0.392534 -0.665275 0.63508 facet normal 4.044750e-001 -9.145491e-001 0.000000e+000 vertex -6.778011e+000 -2.001570e+000 1.747200e+001 facet normal 0.392534 -0.734389 0.553705 facet normal 6.269866e-16 -4.480776e-15 1.000000e+00 facet normal.

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