1
13brv3
Greetings,
Full disclosure- I hate painting, and it hates me
I'm restoring an old 4130 aircraft fuselage frame, and need to coat it with an epoxy primer/paint. The frame is mostly coated in 20 year old powder coat that won't even come off with bead blasting at 90 psi, so I'll be recoating over that. Parts of the frame is new, bare 4130 steel tubing, and a small portion is old welded areas where the rust and damaged paint were bead blasted.
My goal is a durable black epoxy finish, which will resist the solvents in the fabric glue (MEK based). I want to shoot a couple coats of this, and be done with it. The tubes are visible, but it's not like an exterior surface where you'd really care about the appearance, so I don't plan to do any sanding other than to scuff the original powder coat prior to applying the epoxy. I understand the black has some UV protection, and the aircraft will be hangared, so it should be sufficient.
I have already purchased the PolyFiber white epoxy primer, but they don't have black, and I'm thinking I'd rather have black. Naturally, I'm doing this all at the last minute since I plan to have it primed this week.
Questions-
1- How glossy is the black primer? A more satin finish would be better for reducing glare, but I can live with glossy.
2- How long does it take to dry? I'll likely be spraying this outside, so I'd hope for the fastest drying possible to limit the amount of contaminants, and to be able to pick it up to move it back inside later.
3- What's the difference between 6700-1 and 6700-4? I couldn't find any info on that.
4- Finally (for now), I see that there are directions to reduce it to make it a "sealer". Is the epoxy not sealed normally? Since my primary concern is rust prevention, I'd of course need it to be sealed. Is the "sealer" mix needed? If so should I spray a coat mixed as primer, then the next coat reduced as sealer?
Thanks,
Rusty
Full disclosure- I hate painting, and it hates me
I'm restoring an old 4130 aircraft fuselage frame, and need to coat it with an epoxy primer/paint. The frame is mostly coated in 20 year old powder coat that won't even come off with bead blasting at 90 psi, so I'll be recoating over that. Parts of the frame is new, bare 4130 steel tubing, and a small portion is old welded areas where the rust and damaged paint were bead blasted.
My goal is a durable black epoxy finish, which will resist the solvents in the fabric glue (MEK based). I want to shoot a couple coats of this, and be done with it. The tubes are visible, but it's not like an exterior surface where you'd really care about the appearance, so I don't plan to do any sanding other than to scuff the original powder coat prior to applying the epoxy. I understand the black has some UV protection, and the aircraft will be hangared, so it should be sufficient.
I have already purchased the PolyFiber white epoxy primer, but they don't have black, and I'm thinking I'd rather have black. Naturally, I'm doing this all at the last minute since I plan to have it primed this week.
Questions-
1- How glossy is the black primer? A more satin finish would be better for reducing glare, but I can live with glossy.
2- How long does it take to dry? I'll likely be spraying this outside, so I'd hope for the fastest drying possible to limit the amount of contaminants, and to be able to pick it up to move it back inside later.
3- What's the difference between 6700-1 and 6700-4? I couldn't find any info on that.
4- Finally (for now), I see that there are directions to reduce it to make it a "sealer". Is the epoxy not sealed normally? Since my primary concern is rust prevention, I'd of course need it to be sealed. Is the "sealer" mix needed? If so should I spray a coat mixed as primer, then the next coat reduced as sealer?
Thanks,
Rusty
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