Hello TMF,
I've been driving my British Open Classic for a few months now, it is my first car, and I started getting into changing things on it (as you do). At one point I removed my black OEM special wheel arches and door sill rubber moulding to change them to newer, nicer arches - but what I found under my nearside door sill rubber moulding has left me worried a bit. There is some rust, a worrying amount, and I do not know what is the process for treating rust, but I do want to resolve this. What is the normal course of action for this amount of rust? I have never worked on cars before this, but I am very keen to learn. I have included links to the rest of my imgur albums which highlight spots of rust throughout other areas of the car, though the other rust doesn't appear to be as serious as the door sill rust.
overall view of nearside door sill rust:
another overall view of the nearside door sill rust with door shut:
close up of rust towards the front of the door sill:
close up of the rust towards the middle of the door sill:
another close up of the same spot, head on:
a shot of the same spot from below, showing the underside of the car a bit:
a shot of a rust hole on the door sill, towards the end of where the door shuts:
So those are the pictures which show the rust on the nearside door sill, here are links to the rest of my imgur albums of the mini, as you can see this is the most serious place of rot that I've managed to find on this mini:
Thanks for viewing! Please advise on what to do TMF!