
With the various parts painted it was ready for assembly. The base of the trailer was a problem that I found difficult to address. My first thoughts were to use the same wood as the sides of the trailer. But this would mean having six planks laid side by side, probably not evenly. They could not be glued together, successfully. I then thought about plywood. But this gets damaged easily when the thin veneer is scraped. So I finally decided on two layers. The first layer was plywood, cut to fit tight against the sides. The second layer was a sheet of mild steel, again fitted against the sides.
The thin mild steel sheet was primed and then painted with two coats of metal paint. To seal the sides to the base I used quarter round section wood. Wood screws were used to tightly fit against the sides and the mild steel. Silicon sealant was also applied to the mild steel before it was covered by the wood trim.