Fantastic project,
Wish i could make repair sections those! You mentioned that you will put top coat on the seams before sealing. This got me wondering if i have done the right thing with my project, ive put seam sealler some welds stright on onto the primed metal, would i be better stripping it back, re-priming, top coating, then seam sealing?
Luckily ive not got to the front end areas yet so i can do those bits as as your project.
To be honest with you the only reason i have done it the way i have is to trial it. I'm trying to build in as much protection as possible to the seams as they are notorious for rusting even with seam sealing.
I have in the past just primed the seams then seam sealed and painted and maybe i missed a bit who knows for sure but the dreaded rust bug wormed its way in again.
Every seam, joint gap etc that i can get to will have been etch primed, primed and topcoated then welded then paint touched up, seam sealed both sides where possible. Its probably being *rec of the tum* but after spending so much time welding fabricating etc i want the car to be as rust free as possible in the future. The other thing to remember with primer is that it is porous so even seam sealing may not give it the protection you want. I know i still have to bare metal some sections or use zinc based primer to weld but at least there is some extra protection there now.
Every joint in the wheel arches, front wings etc will be seam sealed then stone chipped then topcoated again.
A lot of work i know but its my choice, my son has spent and is still spending a lot of money on 'Erm' so the more we can do to make the car last longer the better in my eyes.
Its your choice as to whether you want to go this route but like i have mentioned the more protection the better especially if you are going to keep your mini long term.
Neil