JohnMartin
Promoted Users
After a 24 hrs with Ospho on the metal , then neutralize by reapplying, then rise with water and dry. How long can the metal sit out in my garage before flash rusting? I probably won’t get to epoxy it for about a week
How long do you leave it on before wiping ? Just a min or two ?If I'm going to leave bare metal, I just wipe it off with a rag, and no rinse. It lasts a long time that way, but my space is always heated.
Thanks for the reply Chevman- how do you go about your adhesion test after you lay some primer down ?I'm usually scrubbing the panel clean all over before wiping it off, but I guess 5 min should do it.
When I scrape with the razor , if I even get the slightest amount of primer to scrape off we could say the adhesion is not as good as it could be ?I've been using it so long that I don't test it anymore, but in the past I have used a razor blade to cut 6 or 7 lines one way, then 6 or 7 lines crossing those (making squares), then try scraping it off with a razor blade. It needs to cure for 7 days first though.