a lesser extent in construction (Wikihouse), textile (Kit Zéro Kilomètres), and firearms (3D printed firearm, Defense Distributed). Licenses Rather than creating a new license, some open-source hardware projects use existing, free and open-source software licenses. These licenses may not accord well with patent law. Later, several new licenses were proposed, designed to address issues specific to hardware design. In these licenses, many of the fundamental principles expressed in open-source software (OSS) licenses have been "ported" to their counterpart hardware projects. New hardware licenses are often explained as the "hardware equivalent" of a well-known OSS license, such as the GPL, LGPL, or BSD license. Despite superficial similarities to software licenses, most hardware licenses are fundamentally different: by nature, they typically rely more heavily on patent law than on copyright law, as many hardware designs are not copyrightable. Whereas a copyright license may control the distribution of the source code or design documents, a patent license may control the use and manufacturing of the physical device built from the design documents. This distinction is explicitly mentioned in the preamble of the TAPR Open Hardware License: Noteworthy licenses include: The TAPR Open Hardware License: drafted by attorney John Ackermann, reviewed by OSS community leaders Bruce Perens and Eric S. Raymond, and discussed by hundreds of volunteers in an open community discussion Balloon Open Hardware License: used by all projects in the Balloon Project Although originally a software license, OpenCores encourages the LGPL Hardware Design Public License: written by Graham Seaman, admin of Opencollector.org In March 2011 CERN released the CERN Open Hardware License (OHL) intended for use with the Open Hardware Repository and other projects. The Solderpad License is a version of the Apache License version 2.0, amended by lawyer Andrew Katz to render it more appropriate for hardware use. The Open Source Hardware Association recommends seven licenses which follow their open-source hardware definition. From the general copyleft licenses the GNU General Public License (GPL) and Creative Commons Attribution-ShareAlike license, from the hardware-specific copyleft licenses the CERN Open Hardware License (OHL) and TAPR Open Hardware License (OHL) and from the permissive licenses the FreeBSD license, the MIT license, and the Creative Commons Attribution license. Openhardware.org recommended in 2012 the TAPR Open Hardware License, Creative Commons BY-SA 3.0 and GPL 3.0 license. Organizations tend to rally around a shared license. For example, OpenCores prefers the LGPL or a Modified BSD License, FreeCores insists on