The original barn condition, deformed, rotten, looking like a starry night against the light after opening...

After cleaning, new petrol and oil section partitions are usually made and all holes are tinned.

After mechanical cleaning, there are many new holes emerging that must be tinned.

When both halves are tinned together the tank is pressure-tested and, in most cases, corrected. After final modifications, when I am sure that the tank is not leaking, the inner part is pour-treated with a special compound.