The Photos below are of the various steel framed components I built for the bus. All of these components have been built from 1" square steel tubing or various sized angle iron. I like steel because its strong and relatively light but takes up a lot less space than pine 2X4 material.
The steel I've selected can be welded fairly easily with any number of the MIG welder on the market. Cutting it only requires a chop saw ... or even a hack saw if you have the patience.
The first 4 photos are the framing for the head walls and the storage unit with slide out shelves. :
The shelf unit is a set of steel shelves turned upside down to give the shelves a 1"+ lip to help keep stored items in place.:
The below are the frames for the settee/bed unit:
This is the frame for the composting head AND mounts for various bit of the bus's electronics. This unit will be lined with water proof sheet vinyl from Home Depot http://www.homedepot.com/p/1-16-in-x...3003/202090190