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Old 12-19-2019, 09:51 PM   #1
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Random Question.... About Shiny Stuff

I was wondering, can cylinders be given a finish that would darken them? You know, to look like a real bolt? If I bought a rifle that couldn't take a new cylinder, could I still make it look like the Teflon cylinders by AA and whatnot?
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Old 12-20-2019, 08:38 AM   #2
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Short answer: Of course they can!
Realistic answer: This question depends heavily on the finish itself, the cylinder composition, what tools you have access to and how much money you want to spend.
You mentioned Teflon cylinders and I know a process that mimicks the look but not that silky smooth pull. If you're interested, you use a patina called stainless black, apply it with scotchbrite pads and your hand.
The pros: Looks fantastic, dulls out color and works on a wide range of unknown alloys.
The cons: It's expensive, highly toxic, and it's wear resistance is nothing to write home about.
This is by no means the only way, just a simple one that should work fine for most random cylinders off the shelf and dull out the color. I have also had a few that normal gun bluing worked for but that depends entirely on what your cylinder is composed off (if it's too stain resistant it won't take the finish). Ferric chloride can also give a dull satin dark gray, again alloy dependant.
None of these are terribly difficult to do, in essence it's just applying acid to metal. This also isn't an exhaustive list by any means, just a few suggestions I use quite often for coloring steels.

Last edited by Shockkandawe; 12-20-2019 at 08:40 AM.
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Old 12-20-2019, 09:07 AM   #3
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Another option than above is to just cut some tin can out to cover the ejection port and paint it however you like.

Or a 3D printed cylinder sleeve. That would give you a smooth pull and could be painted. They do require fitment usually.
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Old 12-20-2019, 03:17 PM   #4
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Quote:
Originally Posted by AccurateDMD View Post
Another option than above is to just cut some tin can out to cover the ejection port and paint it however you like.

Or a 3D printed cylinder sleeve. That would give you a smooth pull and could be painted. They do require fitment usually.
.

3-D printed??? That sounds super rough!
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Old 12-20-2019, 03:54 PM   #5
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Originally Posted by FMP Airsoft View Post
3-D printed??? That sounds super rough!
Sand down to a nice clean finish
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Old 12-20-2019, 03:57 PM   #6
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Don't some people use a cut-out from an aluminum can?
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Old 12-20-2019, 03:59 PM   #7
 
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Its a costly option, though likely the perfect solution, and that is to have it stripped and re-plated. Oddly enough, I ordered such a kit already to refinish my car's plastic branding. (and yes I ordered the extra stuff to plate plastic...)

Matter of fact this is the kit. https://www.caswellplating.com/elect...krome-kit.html (I only ordered the solutions as I have everything for immersion plating and a brush system already..)
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Old 12-20-2019, 04:43 PM   #8
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Originally Posted by Plazmaburn View Post
Its a costly option, though likely the perfect solution, and that is to have it stripped and re-plated. Oddly enough, I ordered such a kit already to refinish my car's plastic branding. (and yes I ordered the extra stuff to plate plastic...)

Matter of fact this is the kit. https://www.caswellplating.com/elect...krome-kit.html (I only ordered the solutions as I have everything for immersion plating and a brush system already..)
That doesn't look terribly expensive. It's less than a new cylinder
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Old 12-20-2019, 05:02 PM   #9
 
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Will warn you though, that stuff may not play well with pot metal. There are multiple plating solutions that will eat pot metal. Dunno which cylinder you have but just be warned.

(May or may not have plated some of a gearbox with Boron Nitride and possibly an AEG piston... for... reasons....)
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Last edited by Plazmaburn; 12-20-2019 at 05:05 PM.
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Old 12-20-2019, 05:55 PM   #10
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Originally Posted by Plazmaburn View Post
Will warn you though, that stuff may not play well with pot metal. There are multiple plating solutions that will eat pot metal. Dunno which cylinder you have but just be warned.

(May or may not have plated some of a gearbox with Boron Nitride and possibly an AEG piston... for... reasons....)
A&k m24 for example
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Old 12-20-2019, 08:29 PM   #11
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Step 1: Go to local book shop
Step 2: Purchase Black Permanent marker
Step 3: Take off lid.
Step 4: Colour in cylinder black
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Old 12-20-2019, 09:50 PM   #12
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That should take patina or quite a few plating solutions rather well. One thing that is worth mentioning about plating though is that you are adding material thickness so be careful not to go too oversize.
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