Safety, quality and reliability – The Sentry.

We have released the design files for the Sentry under an open source license.

All material appearing on this website including drawings, CAD files, spreadsheets and everything else (hereafter referred to as the “licensed material”) is now released under the CC-BY-SA-NC v4.0 license. 

Please click on the link to be directed to the Creative Commons website for a more in depth explanation of the license terms.  While the strict license terms on the Creative Commons website apply, generally speaking you must:

  • Attribute the work and/or any derivatives of it (to or, with a web link if the attribution is appearing online)
  • Share the work and/or any derivatives under the same license (you cannot patent or otherwise restrict derivative works)
  • Not use the work and/or any derivatives for any commercial purpose/s (scroll down past the promo video for our commercial license exemption)

Commercial use license exemption:

If you are seeking to use the licensed material in your commercial enterprise, you may do so under the following terms and conditions.  Unless you completely adhere to these terms and conditions, you may not use the licensed material or any derivatives for any commercial purpose(s).

Final disclaimer:

Use of the licensed material is 100% at your own risk.  We do not accept any liability whatsoever for injury, property damage or death as a result of your use or misuse of this information.  Posted specifications for the Sentry’s performance are estimates only and should not be relied on as a sole source of information.  You are responsible for all safety and performance testing before you attempt to build any Sentry or derivative product, or make any Sentry or derivative product available for sale or for distribution.

To view the archive of licensed material, please click on the large button below.  You can also use the left hand menu to navigate this site.