Profile-node-examples.md

-# Hub
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+# Handle
+
+![](https://user-images.githubusercontent.com/284644/66265880-e33fd480-e836-11e9-91b6-13d07f7e9990.png)
+
+```
+default r0 = 2
+default r_outer = 9
+default edge_w = 1
+default deepen_d = 1
+default edge_h_outer = 5
+default edge_h_inner = 3
+default hub_h_outer = 6
+default hub_r_outer = 3
+default hub_r_inner = 1
+default hub_h_inner = 5
+
+let deepen_w = {r_outer - r0 - edge_w}
+let deepen_r = {(4*deepen_d**2 + deepen_w**2)/(8*deepen_d)}
+let inner_w = {(r0 + deepen_w) - hub_r_outer}
+let hub_thickness = {hub_r_outer - hub_r_inner};
+
+M 0, {hub_h_outer - edge_h_inner + edge_h_outer} ;
+h r0;
+a deepen_r,deepen_r 0.0 0 1 deepen_w,0
+h edge_w;
+v -edge_h_outer;
+h -edge_w;
+v edge_h_inner;
+h -inner_w;
+v -hub_h_outer;
+h -hub_thickness;
+v hub_h_inner;
+h -hub_r_inner;
+```
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