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Entity on behalf of the rail + a safety margin // margins from edges h_margin = thickness*2; v_margin = hole_dist_top*5; output_column = width_mm - thickness*2.5 - tolerance*6; out_row_1 = v_margin+12; // 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 -8.07502 5.88782 facet normal 0.56629 0.392923 0.724518 facet normal 0.982288 -0.187376 0 facet normal -0.0905846 -0.86972 0.485161 facet normal -9.044613e-01 3.288927e-04 -4.265555e-01 vertex -1.084409e+02 9.695134e+01 1.062325e+01 facet normal 0.956942 -0.290279 -7.53346e-07 facet normal -0.191173 0.962691 -0.191515 facet normal -1.995148e-15 -2.840072e-15 -1.000000e+00 facet normal -0.989348 0.0974089 0.108177 facet normal 8.278532e-01 0.000000e+00 5.609448e-01 vertex -1.086297e+02 9.715134e+01 5.544934e+00 vertex -1.084873e+02 9.695134e+01 5.334736e+00 facet normal 0.392536 -0.734388 0.553706 facet normal -0.0366567 -0.092425 0.995045 vertex -8.27705 0 19.9688 vertex -7.75382 -1.99084 19.9468 facet normal -9.788281e-001 -2.046843e-001 0.000000e+000 vertex -5.050561e+000 2.487153e+000 2.496000e+001 vertex -7.007181e+000 7.714146e-001 9.983999e+000 vertex 5.035786e+000 -5.036913e+000 2.496000e+001 vertex -3.168653e+000 -4.714065e+000 2.496000e+001 vertex -2.516711e+000 6.561480e+000 2.496000e+001 vertex -7.038888e+000 4.228040e-001 2.496000e+001 vertex -3.825564e+000 -4.191461e+000 9.983999e+000 vertex -4.608007e+000 5.307639e+000 2.496000e+001 vertex 6.573270e+000 -2.717840e+000 1.747200e+001 facet normal -0.801128 -0.594344 0.0703587 facet normal 0.99518 -0.0980692 0 facet normal 5.733508e-01 -4.875895e-03 8.192955e-01 facet normal 0.500093 -0.865972 -7.30812e-05 facet normal 0.500049 0.865997 -3.43329e-05 facet normal -0.423073 0.690391 0.58683 vertex 5.83026 1.96858 19.8418 vertex 6.7142 0.75193 19.8418 vertex 2.19422 -1.1239 19.9 facet normal 5.212694e-001 8.533922e-001 0.000000e+000 facet normal -0.417288 0.223046 0.880977 facet normal -0.470877 0.0463745 0.880979 facet normal 0.0813285 -0.0818837 0.993318 vertex -4.13072 -4.97411 7.83604 facet normal -0.49999.

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