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Finishing Metal Open discussion on finishing sheet metal products. Feel free to share knowledge of a metal finishing products and or your own proven formulas.


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  #1  
Old 10-13-2008, 08:24 PM
bsmthom bsmthom is offline
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Default What do you use to clean bare metal?

I am looking for something to clean, protect possibly bare steel?

I have heard of phosphuric acid, but can't find it.
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Old 02-11-2009, 08:42 AM
perrib perrib is offline
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Did not see your post it has been a while since I have been on the forum. Any automotive paint store sells it by the gallon. It gets diluted with hot /warm water and washed off with warm/hot water. If done right it puts a galvanized look finish on metal that will resist moisture in the air. I have a fuel tank in the shed that is sandblasted and metal prepped that after 6 months is not rusty.
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Old 03-20-2009, 01:34 AM
mrandrei mrandrei is offline
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You can clean bare metal by just scrubbing using a red scotchbrite.
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Old 03-20-2009, 05:29 PM
cactassdupree cactassdupree is offline
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Yes I saw a painter spraying some oil pipes with something out of a bug spray bottle. Asked him what it was and he told me phosphuric acid. He said it stopped the rusting. I don't know for sure but I think it's in Coca cola.
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Old 03-25-2009, 05:35 PM
TinplaterSteve TinplaterSteve is offline
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While it is true that Coke and all colas have phosphoric acid in them I would not recommend using it to do anything other than drink. The phosphoric is only one part of a system called iron phosphate, or iron phos. A true iron phos can be purchased at an automotive supply store. This is used as a way to complex the iron so that it will not rust, but keep in mind this is not so much of a coating as it is a primer, before the primer. This can only be effectively applied after the steel has been cleaned with some sort of soap and scrub pad or a degreasser of some sort. Hope this helps
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