2D Finger Joint Library

#Finger Joint Library
Created by Aaron Ciuffo aaron . ciuffo at gmail.

**Find the latest version at github: https://github.com/txoof/fingerjoint**

This library calculate the appropriate number of finger joints for joining laser cut parts
given an edge length, material thickness and finger joint length. This is a **LIBRARY**
to be used in other OpenSCAD projects when a finger join (also known as a box joint or
comb joint) is needed between two faces.

To create a joint between faceA and faceB, faceA must have an insideCut() and faceB must
have an outsideCut() to properly align.

*Note:* Finger length must be less than 1/3 the length of the edge to work properly.
If you see the warnings below in the OpenSCAD console, check your finger length
values. Setting text=true will also provide useful visual debugging.
***DEPRECATED: Using ranges of the form [begin:end] with begin value greater than the end value is deprecated.

A demonstration is also provided through module 2