Customizable landing skids (mount under motors)

These are customizable landing skids. They mount under arms using motor mounting screws.

The screws must be 4MM longer than you would use otherwise.

There are now two styles, Rounded and Cross. The cross style landing skids will be lighter, but probably not as robust.

You can customize the distance between mounting holes as well as the size and curvature of the skids.

1/21/2016 - Expanded thickness choices.
2/25/2016 - Added two-hole mounting option.
8/13/2017 - Increased tolerances (no more prying out washers).

Source code and revision history in github: