You are free to use this code for personal use. If you alter or include this code in your own projects you must include credit to my name and a link to this project either to the printables.com page, or mcgit repository.
Commercial use is prohibited without a commercial license. This includes either selling the code or model files derived from the code, as well as printing for the purpose of selling. I am more then happy to offer a commerical license for a reasonable offer.