Hello, my vehicle will be 30 next year, there comes the H license plate, and in my spare time I will make the car beautiful and fit for the hopefully next 30 years. Now I have a problem, which many people have: rust at the lower edge of the door! I am looking for a more durable solution. New doors can no longer be bought, used doors can no longer be found in the proper condition. Every 3 to 5 years after renovation of the rust comes through again. The history of the car is complete, now it would be the third time. I’m looking for something permanent. And I have an idea: My goal is: The lower fold is bent from the outside to the inside by 180°. And in this narrow area you just can’t get rid of the rust, you can only seal it. As a solution I want to widen the fold now, bend it up. Create a little space so that rust protection products can enter the affected area. With a narrow screwdriver I come nic My ideas would be a kind of knife, or other tool. For need of self-made. Or a flat-mice, or chisel for wood. Or a large screwdriver, sanded like a knife at the front. But the fold is very tight, completely flush. There you get really nothing pure to stir it up / to widen it. Also the working space is limited, 2 cm above it is already the looking out metal edge of the door, which goes to the rubbers of the door. I have eternally on the Internet and F oren searched for and unfortunately found nothing that brings me further. Do you have ideas how I could manage to widen this tight fold? Thank you in advance and love greetings!