(Note the gucci signal red North Sea gas style welding overalls - I'm hot to trot - 100% helmet)
^^^^Axial twisting breaks the spot weld free with ease and leaves minimal metal behind with out distorting the structure you're trying to save^^^^
Here's the crud that got cur free =>
I was hoping a piece of scrap Zincor (zinc coated steel) would be just about the right shape - it wasn't in the end - but I thought I'd show this as **** does happen and you have to roll with the punches
Note the fold here needs to be skewy because the outer edge of the panel which goes towards the wheel arch is curved upwards
{This is the metal in the folding machine I've got - you don't necessarily need one of these things - but I like my toys - I'll show a few other methods of folding metal later on in the thread if you like)
Doh! Crap - there you go - about a centimeter too short for the top left hand corner. Instead of patching between the patch I'll re-bend a slightly larger bit of metal.
To be continued (ran out of time today - busy doing other rubbish too)