The frame is made from Evergreen styrene strip and sheet. The weights, sandboxes and column for the brake wheel are wood. The gear box is an HO Pullman toilet from Walthers found in my scrabox. At the moment Jon is sitting on a box but a scrathcbuilt tractor style seat was provided later. The front and sides of the bonnet were printed out to scale on paper then glued onto pieces of styene. Appropriate holes were drilled out. When the front was given a thin coat of silver paint the Lister logo could just be seen. I picked this out with a black pen so it would show up better. On the prototype this is cut out but I was not going to do this on mine!