Last week we had a roughley shaped patch panel,
this week we started by using the incredibly loud planishing
hammer to smooth out the bumps.
When it was smooth enough we traced the outline onto the tank
and cut out the damaged part. Looking at the inside of the removed
part you can see it was pretty nasty!
Before welding in the new part we will gritblast the inside
of the tank because there is quite a bit of rust and it is easy
to access right now;-)