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The arrow. Scale([engraved_indicator_scale * 0.3, engraved_indicator_scale * 0.3]) union() { 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 -6.33566 7.50886 facet normal -0.273151 -0.564052 0.779252 vertex -4.54597 -4.77601 7.16505 facet normal -9.890814e-01 1.286954e-03 1.473648e-01 vertex -1.042625e+02 9.665134e+01 1.047556e+01 facet normal -0.163174 -0.820341 -0.548101 facet normal 8.724433e-001 3.884926e-003 4.887000e-001 facet normal 0.436801 0.865139 0.246453 facet normal -0.0761302 0.0624786 0.995138 vertex 4.32991 6.48017 5.97318 facet normal -5.035335e-001 -2.241907e-003 8.639728e-001 vertex -4.129406e+000 7.695341e-001 2.491820e+001 facet normal 5.305776e-01 5.264215e-03 8.476200e-01 facet normal -0.681166 0.72537 0.0992519 facet normal 0.468298 -0.312748 -0.826369 vertex 2.06806 -2.03063 18.9318 facet normal 0.940728 0.331784 -0.0703635 vertex -8.34335 5.47169 0.0387393 facet normal 4.868859e-001 8.510714e-001 1.965187e-001 vertex -3.995406e+000 -2.373503e+000 2.470887e+001 facet normal -0.0868542 -0.0464245 0.995139 vertex 4.17805 6.2529 6.0001 facet normal -0.714682 0.5865 0.381114 facet normal 0.466811 0.877371 0.110936 facet normal 0.0925097 0.0580283 0.994019 vertex -0.0587368 -7.36167 6.86308 vertex -0.0404587 7.35197 6.86195 facet normal -4.955415e-001 -8.671978e-001 4.905849e-002 vertex -4.981148e-003 5.757380e+000 2.464800e+001 facet normal 9.430566e-01 3.976713e-03 3.326085e-01 facet normal 0.845938 -0.52862 -0.0703605 facet normal -8.334678e-001 5.525680e-001 0.000000e+000 vertex -2.840534e-007 -7.987200e+000 0.000000e+000 vertex 1.384484e+000 -6.987365e+000 2.496000e+001 vertex 3.660537e+000 -6.112594e+000 1.747200e+001 facet normal -0.573973 0.597991 0.55943 vertex -5.74517 -4.54413 7.2866 facet normal 0.0620396 -0.0777953 -0.995037 facet normal -0.688666 0.165341 0.705976 facet normal 0.573948 -0.598005 0.559441 facet normal 1.876690e-15 2.158511e-16 -1.000000e+00 facet normal 8.884378e-01 4.589969e-01 -2.060684e-04 facet normal -0.0810354 -0.083183 0.993234 vertex -5.83003 -4.3315 7.92322 facet normal 2.588493e-001 1.152847e-003 9.659171e-001 vertex -5.215618e+000 1.988232e+000 2.494118e+001 facet normal -0.643692 0.528262 0.553714 vertex -5.64888 7.91125 3.26879 facet normal -1.914251e-01 -2.131062e-03 9.815049e-01 facet normal 0.560077 0.682457 0.469645 vertex 4.93725 7.38912 5.07603 facet normal 2.288380e-14 -1.000000e+00 1.568303e-13 facet normal -0.584623 0.805187 0.0994426 vertex -5.35827 -8.44328 0 facet normal 0.0992487 -0.989167 0.108159 facet normal -0.0865329 -0.878606 0.469642 vertex -1.73373 -8.71606 5.07603 facet normal -9.901835e-01 1.397736e-01 0.000000e+00 vertex -1.032505e+02 1.030635e+02 3.455000e+01 facet normal -0.995185 -0.0980159 0 vertex -1.31069 3.16429 12.85 vertex -0.4 3.34544 9.425 vertex -0.4 3.07081 15.6068 vertex 1.31069 3.16429 11.8737 facet normal 0.0892041 -0.0433596 0.995069 vertex -5.16066 6.47125 19.9688 facet normal 0.338913 -0.181167 0.92321 facet normal -0.995119 0.0979557 -0.0119714 facet normal 8.100479e-01 -3.569934e-03 5.863528e-01 vertex -1.091137e+02 9.665134e+01 9.685153e+00 facet.

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