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Old October 17, 2017, 04:40 PM   #1
BOOGIE the oily
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VHT?

Ok, some of you may remember I bought a Bersa Thunder 9 Pro XT with some "cosmetic details", a couple of months ago.
Now, that gun is known to have some trouble with hard primers, and, since I intend to start reloading soon enough, and all I can get in my country are primers that are famous for having that kind of problems, I bought an extra hammer, and been working on it, and, today, I got a can of flat black VHT for it.
Then it occurred to me: being that I never liked the weapon's duotone, could I paint the frame with VHT?

So here are my questions:

1. How durable would VHT be?

And the most important one:

2. Being that the gun's frame is made of 7075 aluminum, would the baking process damage it, or weaken it? VHT has to be baked in 3 steps, 1st, 30 minutes @ 250° F, then another 30 minutes @ 400° F, and finally 30 more minutes @ 600° F, with 30 minute cool down periods in between. Now, all I could find about annealing 7075 says 900° F for 2 hours. Would I be safe doing it?

Thanks in advance.
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Old October 17, 2017, 05:31 PM   #2
Scorch
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Buy some paint intended for firearms. Firearms get exposed to solvents and a lot of handling, something header paint may not do well with. Brownells and Lauer sell bake-on firearms finishes.
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Old October 17, 2017, 08:51 PM   #3
BOOGIE the oily
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I can't buy online. Don't have a credit card.
That, and the bureaucracy and extra cost surrounding the international purchase of anything firearms related would make it easier (and cheaper) for me to go and cerakote the thing. And cerakoting a handgun in here is about U$S 135, so it's not an option, for the time being.

So my options are VHT, or leaving the gun as it is. I just want to know how viable an option VHT is.
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Old October 18, 2017, 09:48 AM   #4
Onward Allusion
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VHT paint cures with the help of the heat. I think your gun is aluminum alloy so it should be fine with the heat. Another option might be to bead blast to get a raw finish.
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Old October 18, 2017, 11:33 AM   #5
ShootistPRS
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VHT is a ceramic coating. Once cured with the proper application of heat it is as close to a permanent finish as you can get. The curing temperatures will not hurt your guns metal parts but you will want to make sure that only metal parts are heated.
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Old October 18, 2017, 05:04 PM   #6
BOOGIE the oily
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That's what I wanted to know, thank you!
Didn't want to risk ending up with an annealed frame...
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Old October 18, 2017, 05:43 PM   #7
Bill DeShivs
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You can't anneal aluminum. You can, however melt it.
400 degrees is where you will begin to anneal the heat treating of steel parts. 600 degrees is simply too hot.
If you must use VHT, keep the curing temp under 350 degrees to be safe.
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Old October 18, 2017, 06:37 PM   #8
BOOGIE the oily
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Thank you. I probably won't use it.
Gonna have to get used to the stupid duotone, I guess...
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Old October 20, 2017, 10:12 AM   #9
Slopemeno
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I painted a beater 1911 frame in VHT, and it worked great.
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Old October 20, 2017, 07:35 PM   #10
BOOGIE the oily
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I just bought an aluminum flashlight, that came in the most hideous shade of purple I've seen in a while. So it will be my Guinea pig to test the effect of the baking on the aluminum. If the aluminum can take the temperature, I'm doing it.
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