Originally Posted by Widget
Great! thanks Gadge, much appreciated smile

...layer of epoxy to cover the areas that weren't primed by the PA ? (if u know what i mean)


woops I think I meant to write primer .. not sure why I put epoxy.. maybe meant etch primer *shrug*

Originally Posted by Gadge
That's why the commercial rust removers have a 'thickener' added, to give the acid time to do its job.


Thanks gadge :), where do you recommend getting the more concentrated Phosphoric Acid / Orthophosphoric Acid? I found this site which has a local store if its still there) http://kegking.com.au/cleaners-and-sanitising-equipment/pure-phosphoric-acid-96-pure-300ml.html .. not sure if it's thick like the one you mentioned though.

Originally Posted by Gadge
Those epoxy products are quite viscous, and very suitable for filling pits, but not as an overall coating. It's simpler just to swab the whole surface with the acid after doing the pitted areas - as soon as it turns grey, it's ready to rinse off, dry, and hit with a primer coat.


thanks for the info smile .. I think I meant to write etch/primer though lol crazy

Thanks again smile cheers2

Last edited by Widget; 21/12/16 07:10 AM.