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Being just about to start some welding, I know that I need to get the surfaces bright and clean before I begin.

But then I read about weld-through primer. Is this a good idea?

Once a section has been welded and linished, I'm guessing the repaired area would benefit from primer. But should I use a simple primer? Primer filler? Or some other type of filler?

My current plan is for the car to be finished using cellulose paint. Should I be using a specific primer for that?

In summary: Any advice on which paints I should be using as I go through and try to patch the bodywork?

Weld through primer or zinc spray where you have overlaps is certainly better than nothing between the two layers.

Once welded I apply etch primer from a spray can to avoid the immediate flush rust that'll otherwise apear.
When everything is welded, ground back and panels straightened I'd apply an epoxy primer.

I have no clue about cellulose paint...

Hi there, I used to utilize Caropax with which I had good results especially with MIG spotwelding. Caropax is not any more availlable so I tried EUROPAX which obviously superseded Caropax with equally good results.

I do not know if this paste is availlable in UK and perhaps some of UK citizens are a bit allergic against the name of the product.

We seem to be dishing out all this good helpful advice to Cobolman. But unless we know where in the world he is, we are really urinating into the wind.

Tell us where you are Cobolman!

You're absolutely right about the excellent advice on here Peter and thank you to all of you.

I'm based in Devon in the south-west of the UK. Fairly close to Plymouth, in fact.

MiNiKiN wrote: ↑Fri Jun 28, 2024 8:20 am Weld through primer or zinc spray where you have overlaps is certainly better than nothing between the two layers.

Once welded I apply etch primer from a spray can to avoid the immediate flush rust that'll otherwise apear.
When everything is welded, ground back and panels straightened I'd apply an epoxy primer.

I have no clue about cellulose paint...

Great advice. Thank you!

r.tec wrote: ↑Fri Jun 28, 2024 9:00 am Hi there, I used to utilize Caropax with which I had good results especially with MIG spotwelding. Caropax is not any more availlable so I tried EUROPAX which obviously superseded Caropax with equally good results.

I do not know if this paste is availlable in UK and perhaps some of UK citizens are a bit allergic against the name of the product.

LOL! I'm very Euro friendly so thanks for the tip!