 Help with paint prep, Need help with Ospho use |
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| sixaddict |
 Oct 5 2021, 08:45 PM
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#1
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Senior Member  Group: Members Posts: 807 Joined: 22-January 09 From: Panama City Beach, FL Member No.: 9,961 Region Association: South East States 
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Have a glass blasted car in for paint. Needed to apply Ospho for surface light rust that developed. We are trying to determine how to neutralize before epoxy primer goes on.
Instructions say brush off dry powder then wipe with mineral spirits. In another section it says to etch wet with Ospho for 30 minutes then wash down with water. That seems risky due to flash rust. Anyone have experience to recommend which way to go. TIA Terry |
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| sixaddict |
Oct 6 2021, 08:26 PM
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#2
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Senior Member Group: Members Posts: 807 Joined: 22-January 09 From: Panama City Beach, FL Member No.: 9,961 Region Association: South East States
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Appreciate all the input but stills concerns me.
I called Ospho tech assistant line. Neutralizing with water only if you are etching new metal. If rust then let it dry and wipe with mineral spirits. I Noted that it said test if using epoxy primer…..and we are. They said not always but has been issue which means it could be. Finally he advised to use metal etching primer and then use epoxy. Anyone want to comment further is certainly welcome. All of this rattles me as don’t need any experiments or disasters as you can well understand. Thanks again |
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Posts in this topic
sixaddict Help with paint prep Oct 5 2021, 08:45 PM
Montreal914 Ospho website says apply thin coat and let dry 24h... Oct 5 2021, 09:03 PM
Superhawk996
Ospho website says apply thin coat and let dry 24... Oct 6 2021, 06:03 AM sixaddict Great info
Thanks !
quote name='Superh... Oct 6 2021, 08:46 PM bbrock Older bottles of Ospho I bought said to neutralize... Oct 5 2021, 09:43 PM bbrock That link about SPI is a good one and covers some ... Oct 6 2021, 07:37 AM Superhawk996
It was a non-issue in my Montana climate but I no... Oct 6 2021, 07:45 AM rhodyguy Mar Hyde is a good alternative to Ospho for rust c... Oct 6 2021, 09:08 AM Ansbacher Whatever you do, USE EYE PROTECTION when using Osp... Oct 6 2021, 09:40 AM nivekdodge Pick a paint line that you want to use and can get... Oct 6 2021, 08:45 PM nivekdodge This is different, but the same reason why most co... Oct 6 2021, 08:47 PM bbrock Not sure what brand of epoxy you are spraying, but... Oct 6 2021, 10:03 PM |
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