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The smaller board. // margins from edges h_margin = hole_dist_side + thickness; width_mm = hp_mm(h); 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); 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 0.265121 0.618898 0.739376 facet normal -5.080899e-01 8.613040e-01 0.000000e+00 vertex -9.657910e+01 1.060488e+02 2.655000e+01 facet normal 0.801129 0.594342 -0.0703598 facet normal 0.188081 0.291196 0.937993 facet normal 8.23967e-05 -0.113203 0.993572 facet normal -0.0631152 -0.0760952 0.995101 facet normal 0.0376334 -0.272864 0.961316 facet normal 0.952403 0.288805 0.0975683 vertex 8.31492 3.44415 0 vertex 2.42705 -1.76336 0 vertex 0 -7.79364 5.97318 facet normal -0.0635954 -0.807213 0.586824 facet normal -0.630109 -0.773019 0.0735123 facet normal -3.873393e-15 -1.000000e+00 4.657429e-14 vertex -1.065156e+02 9.665134e+01 1.020829e+01 vertex -1.052246e+02 9.665134e+01 1.070702e+01 vertex -1.063499e+02 9.725134e+01 1.021498e+01 vertex -1.065156e+02 9.665134e+01 1.020829e+01 vertex -1.052246e+02 9.725134e+01 1.070702e+01 facet normal -0.243721 -0.18809 0.951432 facet normal 0.900346 0.423674 0.0993863 vertex 7.01045 -3.85403 20 facet normal 0.618219 0.682997 0.388999 facet normal -3.318487e-001 5.689139e-001 7.524716e-001 facet normal 0.0819588 0.0819349 -0.993262 vertex 2.97557 -4.24331 21.7998 facet normal 0.49999 -0.866031 -1.51183e-05 facet normal -9.890909e-01 1.261440e-03 1.473011e-01 facet normal 6.290927e-16 -1.000000e+00 -1.036231e-14 facet normal -2.665746e-15 -1.000000e+00 8.556247e-14 facet normal 0.225392 0.184975 0.956547 facet normal 9.933441e-001 -1.151849e-001 0.000000e+000.

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