2D Finger Joint Library

thingiverse

#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 2Dlayout() and 3Dlayout(). The thingiverse customizer will *not* yield proper STLS in 2D mode. The 3D models are not proper either. This is derived from my previous Finger Joint Boxes. ###tl;dr usage: use </path/to/fingerjoint.scad> //cuts that fall entirely inside an edge insideCuts(length = 204, finger = 10, material = 4.4); //cuts that fall outside an edge outsideCuts(length = 204, finger = 10, material = 4.4); //2D layout demo 2Dlayout(); //3D layout demo 3Dlayout(); ###Demo modules: *Two Dimensional Layout* - SVG EXPORT: Render (F6), *File* > *Export* > *Export as SVG* 2DLayout(); *Three Dimensional Layout* - For visualization only; this will not yield a proper STL for printing 3DLayout(); ##module: insideCuts create a set of cuts that falls entirely inside the edge ###parameters: *length* (real) length of edge *finger* (real) length of each individual finger *material* (real) thickness of material - sets cut depth *text* (boolean) add help text to indicate cut type (for debugging) *center* (boolean) center the set of fingers with respect to origin ##module: outsideCuts Create a set of finger-joint cuts that result in two larger cuts taken at the outside edge ###parameters: *length* (real) length of edge *finger* (real) length of each individual finger *material* (real) thickness of material - sets cut depth *text* (boolean) add help text to indicate cut type (for debugging) *center* (boolean) center the set of fingers with respect to origin ##module 2Dlayout: Create a 2D layout of demonstration box ###Parameters: *xDim* (real) X dimension pf bpx *yDim* (real) Y dimension of box *zDim* (real) Z dimension of box *finger* (real) length of each individual finger *material* (real) thickness of material - sets cut depth *text* (boolean) true: turns on help text to help identify cut type (debugging) ##module 3Dlayout: Create a 3D layout of demonstration box ###Parameters: *xDim* (real) X dimension pf bpx *yDim* (real) Y dimension of box *zDim* (real) Z dimension of box *finger* (real) length of each individual finger *material* (real) thickness of material - sets cut depth *text* (boolean) true: turns on help text to help identify cut type (debugging)