High pressure filter = Suppressor?

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Nivek

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Before I get flamed for it, I understand all the legal ramifications and requirements of manufacturing suppressors.

That being said, I've had a thought buzzing around in my head for a while, and wondered what thoughts anyone might have.
Would it be possible to build a suppressor out of high-pressure in-line filters? Either a single filter, with a can fitted around it, or even stack them around each other (small filter inside a larger diameter filter).
We have tons of these things lying around at work, and I think it would make an entertaining project.
My technical concerns are mostly with regard to the mesh size. Too fine of a filter would create very high pressures, and possibly destroy the integrity of the filter on the first shot. Too large of a mesh, and there will be a minimal effect of slowing the expanding gasses, and make the suppressor innefective.

SO... thoughts? ideas?

If you aren't sure what I'm talking about, check out
this website to get an idea.
 
I saw a picture of a guy who made a silencer from a Fram car oil filter and yes he paid the $200 tax stamp to make it. I'd guess its as quiet as some companies silencers. Its worth a try if all you want to spend is 2 Benjamins. I'd make a serialized shroud for it if you have to replace the inners, due to upgrades or baffle strikes, so then you have an eternal toy.
 
Sure such a thing could be made to work.

The problem is they would get dirty very fast and clog up from powder residue and metal. As they clogged up they would rapidly lose effectiveness.
All of the fine filter would then require a thorough cleaning. Which would also be more of a hassle than a typical silencer design.



The other problem with using unconventional materials is the ATF may then consider such materials "silencer components" when they are possessed by you or intended for use in applications that have nothing to do with silencers.

That could pose a problem because you could then have components you routinely use for non-silencer uses deemed components of a restricted item.
Treated like having a bunch of silencer baffles.
 
@ springwalk... That was kind of my thought, having the ability to easily swap the internals. A removed filter element could easily be cleaned via ultrasonic sink, and a good pressure wash. Could easily serialize the filter case, too.

@ Zoogster... That's a very valid point that I hadn't thought of. Damn those floating legal definitions! Can't really see myself buying a 30,000 PSI filter for anything else though, so it would probably not be much of a hindrance, personally. If someone sold them as a business, I think your concerns would be very legit!

And just to clarify, I do not have the legal permission to do this, nor do I have the intent. It is merely a curiosity I have had, being something of an engineer by profession, I like to think what CAN be done, but I rarely ever DO it haha.
 
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That's Tom Cole of Cadiz Gun Works. I ordered one of these a while back. Thanks for the reminder. I need to call him......
 
You sad:
That being said, I've had a thought buzzing around in my head for a while, and wondered what thoughts anyone might have.
Would it be possible to build a suppressor out of high-pressure in-line filters? Either a single filter, with a can fitted around it, or even stack them around each other (small filter inside a larger diameter filter).

I don't think a single filter element would work very well. The purpose of the baffles, screens or what ever you use internally, is to break up the sound/pressure waves and to rapidly cool the powder combustion gasses. With that in mind, it's obvious that you need a lot of material (screens) with a lot of staggered openings, a large surface area and a lot of mass to do that effectively. That why the one old design used a roll of screen and not a simple one turn layer. However if you have access to a lot of different sized screens and can nest enough of them inside each other then that would probably work. But as someone already pointed out, you'd have to disassemble it to clean it periodically.

Let us know how it works :)
 
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