To explain it in the most basic way- rivetting is the old way of connecting two pieces of metal together. Usually, holes are punched in both pieces of metal, and a red-hot steel pin with a head on top, is inserted in the holes. Then two workers, each armed with pneumatic rivetting guns, fitted with hardened steel cups at the ends, push against the two sides of the rivet. One worker is stabilizing the pre-formed head, while the other is forming the closing head on the other side.
These days, a much better product is achieved by welding the metal together. The resulting seam takes less work, is stronger, requires fewer workers and corrodes more slowly. It also has a completely different finished look.
To achieve the best of both worlds, we are welding hidden seams on the new tender, and rivetting the exposed seams.
Just 3,182 more to go!