Make a Large Trailer - metalworking.iron.lrgtrailer PEP BB

This is a badge bit (BB) that is part of the PEP curriculum.  Completing this BB is part of getting the iron badge in Metal Working.

For this BB, you will make a large trailer!

Here is what one might look like:

(site: Pinterest.com)

Minimum Requirements for this BB:
- make a large trailer (at least double axles)
 - you are building the trailer, not assembling a kit.  Axle, suspension and tongue components may be purchased

To document your completion of the BB, provide the photos or video (<2 min) of the following:
 - The supplies you're starting with
 - Partway through the build
 - The finished large trailer