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(short and long Note: I still have some uncertainty about what the MSDs are playing at the bottom of the knob. [mm] // Bottom radius of the hole smaller. HoleFlatThickness = 0; 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); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=thickness+standoff_height, r=standoff_radius, $fn=360); cylinder(h=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 -8.88682 5.07603 facet normal 0.938727 0.284751 0.194185 vertex 9.99456 1.98804 2.19603 vertex -3.87041 9.34401 2.58057 facet normal -6.62301e-05 -0.115847 -0.993267 vertex 5.10452 0.896427 21.7998 facet normal -0.772965 -0.634336 -0.0119421 facet normal -0.554737 -0.0546401 0.83023 facet normal 9.683073e-01 -2.497600e-01 9.275298e-04 vertex -1.043967e+02 1.005018e+02 2.655000e+01 vertex -9.090395e+01 1.020222e+02 3.455000e+01 facet normal 0.904824 0.425785 0 vertex -6.44874 0.814666 20 facet normal -8.087744e-01 -1.446502e-03 -5.881172e-01 vertex -1.076659e+02 9.715134e+01 5.903821e+00 facet normal -0.594346 0.478923 0.646054 facet normal 0.0458094 -0.920075 0.389053 facet normal 6.451590e-01 7.640483e-01 -0.000000e+00 facet normal -9.609393e-01 -2.767590e-01 -2.032541e-05 facet normal -0.436815 0.865125 0.246476 vertex 0.953609 -6.96854 7.5827 vertex 5.40019 4.13797 7.76535 facet normal 0.0980067 -0.00965325 0.995139 facet normal 3.036929e-01 -9.527700e-01 0.000000e+00 vertex -9.617960e+01 1.059924e+02 1.055000e+01 vertex -9.539322e+01 1.058130e+02 1.855000e+01 vertex -1.012112e+02 1.049915e+02 1.855000e+01 vertex -1.034746e+02 1.027280e+02 1.855000e+01 vertex -9.020291e+01 9.849817e+01 1.855000e+01 facet normal -0.991526 -0.109206 -0.0703586 vertex 6.45862 5.99273 11.8624 facet normal 1.575940e-001 2.757893e-001 9.482111e-001 facet normal -2.890031e-001 4.954602e-001 8.191437e-001 facet normal 0.688669 0.165323 0.705976 facet normal 0.768445 -0.630708 0.108161 facet normal -6.727979e-001 7.398263e-001 0.000000e+000 vertex -5.271722e+000 -4.739358e+000 2.496000e+001 vertex 5.669006e+000 2.916544e-001 1.747200e+001 facet normal -0.109789 0.552532 -0.826229 facet normal -0.880555 -0.472746 0.0336791 vertex 3.08479 -4.5363 21.833 vertex 3.03604 4.44467 21.8214 facet normal 0.683044 0.365095 0.63258 facet normal -0.749604 -0.288937 0.59549 facet normal 0.0846382 -0.279012 0.95655 facet normal 5.735811e-001 2.554049e-003 8.191448e-001 facet normal -0.0796632 0 0.996822 vertex 7.45736 3.59128 19.9688 facet normal -2.516196e-001 -4.420381e-001 8.609819e-001 vertex -4.776940e-003 4.783821e+000 2.493625e+001 facet normal -0.0497529 0.0861751 -0.995037 vertex 0.627597 -9.97537 0.0490595 facet normal -1.572227e-13 -1.000000e+00 3.749041e-13 facet normal 0.60732 -0.740023 0.289014 facet normal 9.992191e-001 4.449341e-003 3.926126e-002 facet normal -0.678289 -0.122657 0.724486 facet normal -0.049718 -0.0861137 -0.995044 facet normal -0.194778 0.980847 -4.93453e-07 vertex 1.29249 -3.16791 6.59 vertex 2.2961 5.54328 6.59 vertex 0 -3.04892 6.59 vertex -3.13809 -1.3499 6.59 facet normal 0.990438 -0.0975473 0.0975565 vertex 8.99402 -0.0606976 4.51215 facet normal -3.934399e-001 6.745033e-001 6.247002e-001 facet normal 6.149876e-002 1.061208e-001 9.924496e-001 vertex 3.861202e-002 -4.960609e+000 2.496000e+001 facet normal 0.954697 -0.292532 0.0545798 vertex 4.19817 -5.60068 7.78686 vertex 5.60181 4.2532 7.5827 facet normal 0.122657 0.678289 0.724486 facet normal.

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