Cast iron radiator finish
#1
09-11-07, 06:14 PM
Cast iron radiator finish
Hello,
I just got my hot water radiators sandblasted to bare cast iron. I know that that most people would paint them to prevent rust but I would prefer to obtain the authentic look of blackened old cast iron (some sort of chemical patina).
I thought of gun oil but the label says that it can emit toxic vapors when heated (not good for a radiator).
Does someone have an idea on how to obtain that kind of finish ?
I just got my hot water radiators sandblasted to bare cast iron. I know that that most people would paint them to prevent rust but I would prefer to obtain the authentic look of blackened old cast iron (some sort of chemical patina).
I thought of gun oil but the label says that it can emit toxic vapors when heated (not good for a radiator).
Does someone have an idea on how to obtain that kind of finish ?
#2
09-11-07, 07:24 PM
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Clear Finish
I don't know if they make a "high heat" clear finish or not. I would think regular automotive clear coat would take the heat but it's safety??? You would almost certainly have to use some sort of primer or base coat & I don't recall ever having seen a clear primer.
#3
09-12-07, 05:17 PM
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Well, there is always black stove paint, you could thin it and paint in on, that would give it that oxidized look. I'm trying to think of what chemical I was playing with the other day that stained some steel I was working with. If I remember, I'll post again. Most oils will also end up staining steel when heated.
#4
09-13-07, 09:52 AM
Thanks for the tips.
I heard about that stove finish products and might give it a try.
I also know that phosphoric acid can darken steel but that wasn't convicing on the cast iron.
I heard about that stove finish products and might give it a try.
I also know that phosphoric acid can darken steel but that wasn't convicing on the cast iron.
