dabuzz 1,962 Report post Posted July 31, 2019 Any tips on removing rust worm properly? Roof of car has a number of spots with worm in it, have used orbital scotch disc on some of the areas so it looks shiny then hit with Brunox But I really want to know if there is more I can do, don t really want it coming back tracking again in the future Quote Share this post Link to post Share on other sites
Nominal 47,249 Report post Posted August 1, 2019 Paging @Spencer I put a lot of effort into this on the roof of my wagon, including sanding, wire brushing, metal prep (phosphoric acid) and undiluted hydrochloric acid (concrete etch type) multiple times. Still had some black spots/pits after all that so I just etch primed it and carried on. 2 Quote Share this post Link to post Share on other sites
dabuzz 1,962 Report post Posted August 1, 2019 interesting, I'm thinking of maybe spot blasting (lightly) with some garnet, hit again with brunox, then cross fingers and epoxy. Be good to hear what the experts say though. Quote Share this post Link to post Share on other sites
Roman 11,470 Report post Posted August 1, 2019 Make sure you've got a water trap on the compressor that you're spraying epoxy with, otherwise water straight back on your steel 3 Quote Share this post Link to post Share on other sites
Casper 1,120 Report post Posted August 1, 2019 Also make sure you key up the brunox,it's epoxy based and paint will lift off it if not keyed up. 1 Quote Share this post Link to post Share on other sites
yetchh 5,452 Report post Posted August 1, 2019 2 hours ago, Nominal said: Paging @Spencer I put a lot of effort into this on the roof of my wagon, including sanding, wire brushing, metal prep (phosphoric acid) and undiluted hydrochloric acid (concrete etch type) multiple times. Still had some black spots/pits after all that so I just etch primed it and carried on. Had the same with the roof of the zephyr. Multiple passes with phosphoric acid/scotch bright/prepsol and had pitting.. Was black from the acid so I made sure it was very dry and epoxied it... Hasn't come back yet. 1 Quote Share this post Link to post Share on other sites
Spencer 20,449 Report post Posted August 3, 2019 On 01/08/2019 at 13:39, yetchh said: Had the same with the roof of the zephyr. Multiple passes with phosphoric acid/scotch bright/prepsol and had pitting.. Was black from the acid so I made sure it was very dry and epoxied it... Hasn't come back yet. This is the method, phosphoric acid and scotch brite, then epoxy. Don’t use single stage rust treatment paints they don’t have very good adhesion compared to acid wash then 2 part epoxy primer. 2 Quote Share this post Link to post Share on other sites
yetchh 5,452 Report post Posted August 3, 2019 7 hours ago, Spencer said: This is the method, phosphoric acid and scotch brite, then epoxy. Don’t use single stage rust treatment paints they don’t have very good adhesion compared to acid wash then 2 part epoxy primer. Learnt from the best.. Quote Share this post Link to post Share on other sites
