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And of the knob. [mm] sphere_indents_cutdepth = 3; difference() { 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 -7.5203 6.0001 facet normal -0.991505 -0.0943136 0.0895749 facet normal -9.659122e-001 -4.301473e-003 2.588343e-001 facet normal 0.844291 0.451284 0.288991 vertex 8.28921 -3.4335 4.79464 facet normal 0.097362 0.0300634 -0.994795 vertex 9.68118 -2.4857 0.0479967 facet normal 8.550802e-01 -5.222628e-03 5.184694e-01 facet normal -0.631363 -0.769325 0.0975683 facet normal 9.652727e-01 -2.864328e-03 2.612287e-01 vertex -9.050454e+01 1.008513e+02 1.046577e+01 facet normal -4.910126e-15 -1.000000e+00 -9.925449e-15 facet normal 5.080608e-01 8.613212e-01 -1.141112e-04 facet normal 0.0975473 0.990438 0.0975565 vertex -8.99402 0.0606976 4.51215 facet normal -0.630682 -0.768461 0.108208 facet normal 3.566374e-01 -9.342429e-01 0.000000e+00 vertex -9.073906e+01 9.614893e+01 1.855000e+01 vertex -9.698088e+01 9.171996e+01 2.655000e+01 facet normal -0.995182 0.0973807 0.0114129 vertex 1.05954 7.19679 7.81812 vertex 1.0528 7.11659 7.9152 facet normal 0.768559 0.630556 0.108246 facet normal 0.3461 -0.295601 0.890413 facet normal -0.951058 -0.309012 9.00916e-06 facet normal -1.951069e-01 9.807820e-01 0.000000e+00 vertex -1.041734e+02 1.012768e+02 2.655000e+01 vertex -9.029320e+01 9.769664e+01 1.855000e+01 vertex -9.390516e+01 1.051966e+02 1.055000e+01 vertex -1.031007e+02 9.453586e+01 2.550000e+00 facet normal 0.125325 -0.992116 0 vertex -0.4 3.26571 8.11431 facet normal 0.946342 -0.307486 0.0994494 facet normal 0.124761 -0.98719 0.0994495 vertex 0.502324 7.98421 20 vertex -7.74866 1.98952 20 vertex -5.69599 3.1314 20 vertex -2.00861 6.18187 20 vertex 6.54872 1.35564 20 vertex -5.25861 -3.8206 20 vertex 2.00861 6.18187 20 vertex -3.48287 5.48813 19.9 facet normal -9.975508e-001 -4.441443e-003 6.980412e-002 vertex 4.038087e+000 -1.534191e-002 2.470218e+001 facet normal -3.279645e-001 -5.711591e-001 7.524737e-001 vertex 3.480290e+000 2.717579e+000 2.488700e+001 facet.

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