Lacquer coating solution

Reloading info for the 5.7x28mm

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miker57
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Lacquer coating solution

Post by miker57 » 23 Feb 2009, 17:17

After reloading the brass a couple times, the lacquer starts to wear off and it causes feed problems in the PS90 mags and it becomes quite difficult to get a full 20 rds loaded in the pistol mags.

I found a 12oz spray can of Valspar fast-dry Lacquer, Hi-Gloss Clear #65064, at a local Lowes store for around $4. I tested it on a couple of reloaded rds, and it seems to work great! Once dry, you can't tell the reloads from the factory brass. One spray can appears to be enough to do a couple thousand rds. I plan to spray all my reloads once it warms up outdoors. You can't spray this stuff in house, it's very toxic and the fumes are not good for gas appliances, furnance, water heaters, etc.

I'm planning to make a spray rack out of peg-board, since the holes are just the right size to stick the rds in upside down.

Has anyone else tried any lacquer solutions?

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Re: Lacquer coating solution

Post by jmz5 » 23 Feb 2009, 17:40

That pegboard rack is a good idea!
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Re: Lacquer coating solution

Post by Cyberfly » 23 Feb 2009, 17:47

I'm not knocking anybody's ideas, but I am curious of MO and panzer's take. I know they have conquered the lacquer coating problem, but theirs is a trade secret and commercial in nature.
However, for the backyard reloader, this Valspar idea, if it will work could greatly extend the life of brass that isn't hotloaded.
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Grantness
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Re: Lacquer coating solution

Post by Grantness » 02 Mar 2009, 09:47

This is an interesting idea. I have ALOT of 2-3x fired brass that I have put in my "D" (as in ABCD) bin and relegated to SHTF situations....just because the coating has worn down. Perhaps I could breath some new life into them :ponder: Maybe I'll do a little experiment w/ some different types of laquers/protectants and report back w/ pics... :ponder: Just as soon as some of this snow melts :laugh:

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Re: Lacquer coating solution

Post by RadCat » 02 Mar 2009, 11:42

Grantness wrote:This is an interesting idea. I have ALOT of 2-3x fired brass that I have put in my "D" (as in ABCD) bin and relegated to SHTF situations....just because the coating has worn down. Perhaps I could breath some new life into them :ponder: Maybe I'll do a little experiment w/ some different types of laquers/protectants and report back w/ pics... :ponder: Just as soon as some of this snow melts :laugh:

What is this "thing" you call snow ?? Is it a white and fluffy stuff that falls from the sky so that some people can have an excuse not to go out and play ??? :laugh: :?: :ponder:

You can use clear engine hi-temp paint in a single coat, once you totally clean your brass. Maybe a light tumble in some "bead blast media" followed by some more tumbling in clean plain corn cob, and then using that "pegboard" method ???

Hell, don't you have a heated garage ???

The biggest problem I have found in multiple fired 5.7 X 28 brass is some small stress cracks that seem to go through in the re-shaped shoulder area. :(
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Re: Lacquer coating solution

Post by Grantness » 02 Mar 2009, 11:54

The white fluffy stuff that you mention is somewhat of a novelty to me still... I moved up to NC about a year ago and love it. I dont think the temp has hit 80 all year. Trust me, after spending a couple dozen summers in Florida, the snow is a welcome alternative. :cool: Oh...and I cant just use my garage cause the roads have over a foot of snow on them and even my all-wheel drive SUV would prop get stuck on the way to the hardware store...

Why would I want to apply a coat and then tumble/clean it before applying again w/ the pegboard? Wouldnt all that tumbling just remove the coat? Im wondering if any of these various and sundry coating substances will apply evenly to the case so that you cannot distinguish between the original laquer and the parts where the new coating has filled in. Is this possible or would I have to find some way to remove the original laquer all together before applying the new coat?

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Re: Lacquer coating solution

Post by stg2ahn » 02 Mar 2009, 11:58

I guess the next challenge would be to try and get an even coat and the right amount of coating. :ponder:

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Re: Lacquer coating solution

Post by 5Jeffro7 » 02 Mar 2009, 12:03

Grantness wrote:
Why would I want to apply a coat and then tumble/clean it before applying again w/ the pegboard? Wouldnt all that tumbling just remove the coat? Im wondering if any of these various and sundry coating substances will apply evenly to the case so that you cannot distinguish between the original laquer and the parts where the new coating has filled in. Is this possible or would I have to find some way to remove the original laquer all together before applying the new coat?

quite simply, you wouldn't...I belive, if reading him correctly, that you'll want to thoroughly clean the OLD coating off through those various stpes & THEN re-apply the new stuff..at least that's my take on the situation

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Re: Lacquer coating solution

Post by RadCat » 02 Mar 2009, 15:14

Quite so.

IMHO, if you are going to do something, might as well do it right, all the way.

Heck, I'd probably soak the cases in acetone, or some other solvent that would either dissolve the coating or soften/degrade it enough so that tumbling it a little bit on some bead blasting media would finish removing any remnants of ALL the previous coating, plus would provide a fresh slightly abraded surface. The clean corn cob would then remove any remnants of abrasive dust and give a good clean, uncontaminated surface. The cases thus prepared would be perfect to receive a coat to similar (hopefully) conditions and finish as a new one from the factory. While over-building on the coating over the old coating may not be an issue, it could add to "scraping" when re-sizing them again. There is also the possibility of material compatibility when you spray over the old coating. Sometimes the new coating will not adhere to the old one, or it may creep inside it, causing it to peel off or "crinkle". So to me it makes sense and less trouble to just get rid of it easily enough, and start fresh. Less work, better finished product.

Of course how many times you may be able to do this ?? Not that many as probably the cases will separate the shoulder soon enough. :furious: :wall: :cry:

But the prospect of "real" fresh new virgin brass, is even more appealing. :D
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Re: Lacquer coating solution

Post by panzermk2 » 02 Mar 2009, 16:01

acetone and acetate will not remove the coating.
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Re: Lacquer coating solution

Post by jmz5 » 02 Mar 2009, 17:11

Zip strip. :D
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Re: Lacquer coating solution

Post by panzermk2 » 02 Mar 2009, 19:56

Actually organic acid.
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Re: Lacquer coating solution

Post by Grantness » 02 Mar 2009, 21:19

How bout soaking them in coke? The citric acid will probably do the job, no?

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Re: Lacquer coating solution

Post by DarkWater » 03 Mar 2009, 08:32

windex...works on everything :p

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Re: Lacquer coating solution

Post by Grantness » 03 Mar 2009, 10:26

Actually, I KNOW that leaving your brass in Simple Green for too long (read: >1-2hours) will definately take off the laquer coating. The problem is, the brass itself will start to turn a dark shade of purple almost black....especially starting around the neck, which concerns me.

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Re: Lacquer coating solution

Post by panzermk2 » 03 Mar 2009, 21:03

Organic acid works great. You do have to leave the jar in a snow bank so it does not over heat. Ice bath would work for you southern guys.
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Re: Lacquer coating solution

Post by tejohnson » 03 Mar 2009, 21:37

Is peracetic acid a bad idea? I use this to clean my suppressor baffles, and it is very effective.

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Re: Lacquer coating solution

Post by Hoover 1 » 04 Mar 2009, 03:41

Grantness wrote:Actually, I KNOW that leaving your brass in Simple Green for too long (read: >1-2hours) will definately take off the laquer coating. The problem is, the brass itself will start to turn a dark shade of purple almost black....especially starting around the neck, which concerns me.
I did not know that. :ponder:

Thanks for the info! :thumb:

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Re: Lacquer coating solution

Post by Llagoud » 04 Mar 2009, 04:04

Is there any concern of acid-immersion/heat induced hydrogen embrittlement?

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Re: Lacquer coating solution

Post by panzermk2 » 04 Mar 2009, 21:55

Thats why you have an ICE bath.

Steve I don't know if that one would work. I will have to post the exact type when I get home and check the bottle. I 3 or 4 types of Organic acids around the house.
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