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Outer circumference of the knob before its final position. [mm] shafthole_height = 12; // [1:1:84] // Four hole threshold (HP h_margin = hole_dist_side*4; v_margin = hole_dist_top*2 + thickness; right_rib_x = width_mm - thickness*2; // 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 -7.49999 6.0001 vertex 6.23601 -4.16678 6.0001 vertex -4.16678 -6.23601 6.0001 vertex -6.92908 -2.87013 6.0001 vertex -6.92908 2.87013 6.0001 vertex 2.87011 -6.92909 6.0001 vertex -4.16677 6.23601 6.0001 vertex -5.30329 -5.30329 6.0001 facet normal 0.468635 0.876739 0.108209 facet normal -5.142143e-001 8.576617e-001 0.000000e+000 vertex -6.551333e+000 -2.663729e+000 2.496000e+001 vertex -6.809373e+000 1.801893e+000 2.496000e+001 vertex -3.363539e+000 -6.257409e+000 2.496000e+001 vertex 2.602059e+000 5.001575e+000 2.496000e+001 vertex 5.649070e+000 4.246676e+000 2.496000e+001 vertex 5.276588e+000 -4.782847e+000 9.983999e+000 vertex -2.441682e+000 -5.133782e+000 9.983999e+000 vertex 2.614851e+000 6.540324e+000 2.496000e+001 vertex -3.789330e-001 5.612119e+000 1.747200e+001 facet normal 0.796859 -0.175921 0.577986 facet normal -0.954697 0.292532 0.0545798 facet normal 4.924159e-001 8.623463e-001 1.178368e-001 vertex -3.991821e+000 -2.371412e+000 2.467858e+001 facet normal 0.556491 0.830854 -1.85843e-07 vertex -3.15398 1.32612 6.59 facet normal -0.758285 0.622326 0.194199 facet normal -0.766713 0.634279 0.0992069 facet normal 0.532805 -0.843308 0.0703631 facet normal -0.472777 -0.88054 0.0336276 facet normal -0.741889 -0.638745 0.203973 vertex -4.37272 -5.83103 7.67586 vertex -4.38745 -5.82788 7.61242 facet normal 7.413586e-01 6.711090e-01 -3.299664e-04 vertex -9.218835e+01 9.392771e+01 2.550000e+00 facet normal -2.862063e-01 -2.896355e-03 -9.581636e-01 vertex -1.057085e+02 9.725134e+01 1.281102e+01 facet normal 0.499998 -0.866027 1.12546e-07 facet normal -0.297032 -0.243844 0.923208 facet normal -0.989347 -0.0973966 0.108199 facet normal -9.683077e-01 2.497601e-01 -2.366477e-04 facet normal 0.816066 -0.54531 -0.191504 facet normal -0.30557 0.114495 0.945261 facet normal -0.880533 -0.472793 0.0335807 facet normal -5.564408e-02 9.984506e-01 -3.482604e-04 vertex -9.778701e+01 1.060828e+02 1.055000e+01 facet normal 0.161832 -0.533413 0.83023 facet normal 9.996069e-01 -2.803745e-02 0.000000e+00 vertex -9.937561e+01 1.058129e+02 1.855000e+01 vertex -9.322199e+01 9.303533e+01 1.055000e+01 facet normal -9.777786e-001 -4.353408e-003 2.095953e-001 facet normal -5.735852e-001 -2.554333e-003 8.191419e-001 facet normal 0.247486 0.963775 0.0994347 facet normal 0.63066 -0.768477 0.108216 facet normal 0.706052 0.0555714 0.705976 facet normal 0.992162 0.101047 0.0735128 facet normal 0.685181 -0.343415 0.642334 facet normal -0.0914036 -0.463056 0.881604 facet normal 0.175905 -0.796857 0.577993 vertex.

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