May 15, 2015 · Ospho, is a great product for automotive if used right, we give scare warnings because we want people to call so we can make sure they know how to neutralize it, so no …

Oct 10, 2015 · I just completed a crude rust removal experiment and wanted to share my results with everyone. 3 products were tested: - Ospho ($32/gal) - Eastwood’s Gel Rust Dissolver …

Feb 24, 2010 · Ospho is a water-based solution and the water can hide in nooks and crannies causing adhesion failure of the primer. Old car frames are particularly susceptible to this …

Mar 30, 2010 · This is the start of a thread dedicated to successful rust removal using ospho,a water based phosphric acid product I've been using professionally for many years. Ospho has …

Sep 9, 2022 · My understanding is that Ospho will convert surface rust, but if the rust layer isn't very superficial, I would assume that under the ospho treatment there is still deep rust. Is that …

Dec 5, 2023 · Flash rust is OK. Stuff that happens in the moments after treating it with Ospho then rinsing. If you have any black pits of rust, you need to remove them or it will fail in that spot. …

Nov 21, 2023 · Meaning after you have treated it with Ospho which will take a while to get all the surface rust off and etch a tooth into the metal. Re-wet it with Ospho and keep it wet with …

Nov 16, 2020 · Get some Ospho and follow the procedure on page 13 of the SPI tech manual. The only difference I would add is to use red scotchbrite pads with the Ospho, not a towel. A …

Jul 11, 2017 · RE: Ospho over paint Thanks for the reply. Everything was super clean and wax free when I put on Ospho. I was not in a hurry to wipe everything down, as I wanted the anti …

Apr 23, 2023 · If you Ospho'ed it after blasting you will need to neutralize the Ospho before applying epoxy. Simply re-wet with Ospho, keep it wet with product for 10 minutes or so then …