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#1
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Protecting 4130 until I can prime it?
I presented the following problem to a local authority and he suggested
a solution. Can I get your thoughts on the adequacy of his suggestion? I'm going to be removing old paint and primer from 4130 over a long period of time. After a few hours, the bare metal will begin to rust, so I'd like to protect it until I can apply a two-part epoxy, probably a month or so later. He suggests any of the lacquer-based spray-on paints would act as a barrier, and would not deter two-part epoxy from adhering to the metal when I get around to applying it. Your thoughts please? - Mike |
#2
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Protecting 4130 until I can prime it?
My tack welded Super Cub fuselage has been sitting in my garage for a
couple years. I am just now getting around to finish welding it. From time to time I would just would tend to any areas of surface rust that appeared with steel wool and WD-40. I guess it depends on your climate but bare 4130 and minor surface rust isn't going to make your fuselage turn to fine powder dust. I live in the Northwest and we are not very humid. Is your fuselage kept outdoors? That would require extra measures perhaps as was suggested. mhorowit wrote: I presented the following problem to a local authority and he suggested a solution. Can I get your thoughts on the adequacy of his suggestion? I'm going to be removing old paint and primer from 4130 over a long period of time. After a few hours, the bare metal will begin to rust, so I'd like to protect it until I can apply a two-part epoxy, probably a month or so later. He suggests any of the lacquer-based spray-on paints would act as a barrier, and would not deter two-part epoxy from adhering to the metal when I get around to applying it. Your thoughts please? - Mike |
#3
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Protecting 4130 until I can prime it?
Bugs - I just didn't/don't want to re sand; also, I'm of the impression
there can be rust formed that I can't see, so I wanna get something on the metal ASAP after bringing it to bare metal. And it gets humid here in DC - Mike Bugs66 wrote: My tack welded Super Cub fuselage has been sitting in my garage for a couple years. I am just now getting around to finish welding it. From time to time I would just would tend to any areas of surface rust that appeared with steel wool and WD-40. I guess it depends on your climate but bare 4130 and minor surface rust isn't going to make your fuselage turn to fine powder dust. I live in the Northwest and we are not very humid. Is your fuselage kept outdoors? That would require extra measures perhaps as was suggested. mhorowit wrote: I presented the following problem to a local authority and he suggested a solution. Can I get your thoughts on the adequacy of his suggestion? I'm going to be removing old paint and primer from 4130 over a long period of time. After a few hours, the bare metal will begin to rust, so I'd like to protect it until I can apply a two-part epoxy, probably a month or so later. He suggests any of the lacquer-based spray-on paints would act as a barrier, and would not deter two-part epoxy from adhering to the metal when I get around to applying it. Your thoughts please? - Mike |
#4
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Protecting 4130 until I can prime it?
"mhorowit" wrote in message
ups.com... Bugs - I just didn't/don't want to re sand; also, I'm of the impression there can be rust formed that I can't see, so I wanna get something on the metal ASAP after bringing it to bare metal. And it gets humid here in DC - Mike Then how would you remove the spray paint before you do the two part epoxy? What about just painting in sections as you go? -- Geoff The Sea Hawk at Wow Way d0t Com remove spaces and make the obvious substitutions to reply by mail When immigration is outlawed, only outlaws will immigrate. |
#5
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Protecting 4130 until I can prime it?
I have had very good luck with SEM, Self Etching Primer, just put that in google and you'll come up with many internet sources. It ranges around $14 to $16 per spray can, delivered. It covers great, dries fast and prepares the surface for a finish coat, all at the same time. You would have to check the specs to see if it is compatible with the product you want to use for finish, my guess is that it probably is. It also stinks like hell, so wear a mask and make it the last thing you do before closing down the work area for the day. Don... |
#6
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Protecting 4130 until I can prime it?
On 4 Oct 2006 08:46:12 -0700, "mhorowit" wrote:
I presented the following problem to a local authority and he suggested a solution. Can I get your thoughts on the adequacy of his suggestion? I'm going to be removing old paint and primer from 4130 over a long period of time. After a few hours, the bare metal will begin to rust, so I'd like to protect it until I can apply a two-part epoxy, probably a month or so later. He suggests any of the lacquer-based spray-on paints would act as a barrier, and would not deter two-part epoxy from adhering to the metal when I get around to applying it. Your thoughts please? - Mike Epoxy prime as you go. You can mix very small amounts by sucking it out of the cans using syringes and mix in a small graduated cup.Apply it with a disposable sponge brush. Any leftovers can be saved in your freezer for a few days. |
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