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Or motor shafts to have their knobs affixed. Enable_setscrew_hole = false; // Scale factor for the articles! Smoothing_radius = 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 -9 3.82299 vertex -5.22233 -7.48471 3.76384 vertex -8.81405 -1.79875 3.82299 facet normal 8.191610e-001 3.647569e-003 5.735521e-001 vertex -5.024576e+000 9.625285e-001 2.475471e+001 facet normal 0.634846 -0.772555 0.0113566 vertex -5.7853 4.29641 7.81019 facet normal 0.0980238 0.995184 0 vertex 5.96308 -8.22545 2.19603 vertex -5.66146 8.47298 2.19603 vertex 9.99456 -1.98804 0 vertex -7.48323 5.00013 0 vertex 2.45196 -0.487725 6.7 vertex -0.487725 -2.45196 6.7 vertex -2.07867 -1.38893 6.5 vertex -1.38893 2.07867 6.5 facet normal -0.0822024 -0.0560446 0.995039 facet normal -0.994933 0 0.100537 facet normal -4.915316e-001 -8.601798e-001 1.359681e-001 facet normal -4.272969e-001 -1.192815e-003 9.041106e-001 vertex 5.221126e+000 -3.013152e+000 2.492316e+001 facet normal 0.748114 0.309898 0.586762 vertex 2.06904 0.821707 19.9 vertex -6.29579 1.61648 19.9 facet normal -0.15155 0.00987306 0.9884 vertex 0.221399 -7.2243 6.88859 facet normal -0.0896502 -0.0431732 -0.995037 vertex 6.37291 7.69968 0.0489512 vertex 7.20635 6.91828 0.039823 facet normal -2.588537e-001 -1.152747e-003 9.659159e-001 vertex 5.257298e+000 -2.071352e+000 2.494118e+001 facet.

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