keeping a bare metal frame
#1
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keeping a bare metal frame
so i recently stripped the paint off of my old KHS Gran Sport road bike. i was originally going to rattle can paint it but my first attempt at painting it failed. i re-stripped the paint but i am realizing i really like the bare metal look and want to keep it. anyone know of any good techniques for keeping the bare metal but without it rusting up? i heard that clear coating it doesn't work because the clearcoat chips off in about a week. i heard one technique works is using a metal polish like Mother's Mag and Aluminum Polish and just apply it monthly. i also heard from a guy in a bike shop that heating up the frame with a torch and then rubbing peanut oil on it also works. has anyone used either of these methods with any long term success?
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so i recently stripped the paint off of my old KHS Gran Sport road bike. i was originally going to rattle can paint it but my first attempt at painting it failed. i re-stripped the paint but i am realizing i really like the bare metal look and want to keep it. anyone know of any good techniques for keeping the bare metal but without it rusting up? i heard that clear coating it doesn't work because the clearcoat chips off in about a week. i heard one technique works is using a metal polish like Mother's Mag and Aluminum Polish and just apply it monthly. i also heard from a guy in a bike shop that heating up the frame with a torch and then rubbing peanut oil on it also works. has anyone used either of these methods with any long term success?
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i also heard from a guy in a bike shop that heating up the frame with a torch and then rubbing peanut oil on it also works.
I have had the same problems with clearcoat and polyurethane. Everbrite specializes in clearcoating and they say their product holds up on door kickplates, boat and car parts and such but I have not tried it. I used black plasti-dip after giving up on clearcoating and it is the best rattle-can I have come across and they make a clear version. It is like rubber cemet or clear latex when it dries. It is flexible and doesn't chip. At $5 a can it is worth a shot. Get some automotive 2000+ sand paper and the metal will shine nicely, though it is hard to polish the BB and seat lugs/welds.
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awesome. i'll try the plati dip. where did you find the clear spray? and how many coats did you do?
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I wouldn't do that with an Al frame. Aluminum likes to move around when it get's hot and bad things happen to Al at lower temperatures than with steel. Thin butted tubing + heat = sounds bad.
#6
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This question involves an aluminum frame?
Don't do anything.
Aluminum, like titanium, forms an instant oxide coat that protects it from further corrosion.
However, if the original post had referred to a steel frame, another option exists.
Gunsmiths who refinish very expensive firearms sometimes use a process called "browning."
This process involves a daily wipedown with a lightly oiled cloth soaked in water and then wrung out as completely as possible.
One would need to keep the bike disassembled during this process for about three weeks, and rub it down thoroughly and conscientiously at least once per day.
Depending on the steel composition, it will, over time turn either a uniform soft grey, or it will turn a wheat-gold-brown; again, depending on the steel composition.
Once the color has stabilized, the steel will resist further corrosion with an ocassional wipe down of a damp oily cloth.
=====
The above said, I visited the United Bicycle Institute in Ashland, Oregon a few years back, and one of the instructors had built an old school track bike for the street, and had finished the frame with nickel plating.
Nickel plating does not have the hardness of chrome, and nor does it have the brite shininess of chrome.
Rather, nickel turns a soft, lustrous, glowing steel grey that looks very much like freshly stripped and scrubbed steel.
I think nickel plating costs about the same as powdercoating; and less than real chrome plating, which involves three coats, 1) copper, 2) nickel, and 3) chrome.
I think nickel has about the same resistance to scratching and damage as does powdercoating.
Don't do anything.
Aluminum, like titanium, forms an instant oxide coat that protects it from further corrosion.
However, if the original post had referred to a steel frame, another option exists.
Gunsmiths who refinish very expensive firearms sometimes use a process called "browning."
This process involves a daily wipedown with a lightly oiled cloth soaked in water and then wrung out as completely as possible.
One would need to keep the bike disassembled during this process for about three weeks, and rub it down thoroughly and conscientiously at least once per day.
Depending on the steel composition, it will, over time turn either a uniform soft grey, or it will turn a wheat-gold-brown; again, depending on the steel composition.
Once the color has stabilized, the steel will resist further corrosion with an ocassional wipe down of a damp oily cloth.
=====
The above said, I visited the United Bicycle Institute in Ashland, Oregon a few years back, and one of the instructors had built an old school track bike for the street, and had finished the frame with nickel plating.
Nickel plating does not have the hardness of chrome, and nor does it have the brite shininess of chrome.
Rather, nickel turns a soft, lustrous, glowing steel grey that looks very much like freshly stripped and scrubbed steel.
I think nickel plating costs about the same as powdercoating; and less than real chrome plating, which involves three coats, 1) copper, 2) nickel, and 3) chrome.
I think nickel has about the same resistance to scratching and damage as does powdercoating.
#7
Lost
clearcoat, properly applied is fine. there is clearcoat over any good modern bike finish, and it holds up fine.
rattle cans will not work well. to do a good job you need access to a good spray system (using compressed air and a spray gun) and a curing mechanism.
any good car body shop should be able to do it cheap for you.
rattle cans will not work well. to do a good job you need access to a good spray system (using compressed air and a spray gun) and a curing mechanism.
any good car body shop should be able to do it cheap for you.
#8
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The problem with clear over bare metal is that the clear has nothing to bite to.On a normal paint job it's primer over sanded metal,base coat over primer and clear over base.The primer is formulated to adhere to metal and has a porous surface that the base coat can cling to.The base also has a porous surface(kind like flat paint),giving the clear something to adhere to.
#10
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the frame is just a Tange chro-mo frame, everything is just brazed on
#11
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Got the Plasti-dip at the Home Despot. Best to call and see if they have it since clear is not their top selling color. Or you can get it from an online source. If you don't have automotive or 1000+ sandpaper, varying grades of steel wool will get a decent polish before spraying. Use a mask or something. You'll know why when your snot is black. Use the clear coat like cologne. Spray lightly and walk away. Repeat.
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spray it with wd40 and clean it like that. it should stick and keep it from rusting