How tough is it to braze?

[Rubycon]

If it's hard to fix a radiator because of the awkward position, why not just remove the whole radiator? PITA, but would be a better repair.

Awkward position meaning the repair is difficult and likely to fail. The radiator should always be removed so the repair can be tested.

 

[MongGrel]

The madame President of ATOT is a cruise ship engineer. Everyone knows this.

I probably should have by now, but I didn't.

That explains a lot

 

[NAC4EV]

My air conditioner has two broken coils and the mice keep getting in. I'm considering just DIY'ing it. How tough is it to? I've never brazed.

For the untrained: refrigerants is not a DIY project.\
You need equipment and a certification.

You will make your problem worse.