This design is by JA Prints and Crafts and was found on Printables Under the "Creative Commons (4.0 International License) Attribution-ShareAlike" License. The design was not modified. As I acquired more power tools, I ran into a problem. How am I going to store the batteries? As I was looking for an answer, I found that many people already solved this problem. This battery holder is for RIDGID 18v batteries. Printables Link:https://www.printables.com/model/353332-ridgid-tools-double-18v-battery-holder-with-slant License: https://creativecommons.org/licenses/by-sa/4.0/