Parametric 6 Piece Burr Selecter

thingiverse

This is an enhancement to my "Parametric 6 Piece Burr Builder". Rather than define individual pieces I draw on the work done on http://www.robspuzzlepage.com/interlocking.htm#histcat Here you will find a detailed analysis of all the usable 6 piece burr shapes (I call them templates in the code.) Rob's page includes a method for defining which notches are removed using binary, e.g.: - Code 7 means remove notches 1, 2, and 4 - Code 16 means remove notch 5, etc. NOTE: Rob labelled the pieces starting at "1", for the piece with Code = 0, so remember to subtratct 1 where required! Following the template definitions there is a list of 286 different burr design, with a historical analysis of when many were published. Mnay solutions can be found all over the web, including YouTube, but many are not!! NOTE: Some design allow a burr to be any length, some designs require length at least 8, and some require 6 or less (must be greater than 4 of course.) There is a parameter to set this at the top. Many of the puzzles are famous for their complexity since these models have internal voids, meaning the the first piece can slide, without being removed (e.g. Phillipe Dubois's design) . Please read Rob's page, it is good stuff. The web page continues into other puzzle designs such as 18 piece burrs which are beyond the scope of this code. I analyzed Rob's page and identified the 150+ templates common to the 286 designs. I created the binary coding and hard coded this in the SCAD. It is a simple thing to write code to convert a decimal number to binary, but OpenSCAD is not a proper programming language. I included some code to generate binary for one piece, should it not be included in the list, you'll see how tedious it is. So, the program now consist of identifying the 6 pieces required, the code determines the bit patterns from the list and prints the pieces. In addition I include code to print on the piece: - An ID for the piece; - The template ID for the piece; - A name for the puzzle. These can be individually commented out at lines 82 to 84. I hope the code is sufficently commented, please let me know! For other hints about printing please refer to "Parametric 6 Piece Burr Builder". Hopefully this is enough to get you going, enjoy!