need input

Yes, it can be legal to make a silencer. For everything Form-1, from silencer designs that are easily made, to filing forms with the BATF, to 3D modeling. Remember, you must have an approved BATF Form-1 to make a silencer. All NFA laws apply.

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ddbmike
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need input

Post by ddbmike »

Gone fishing :wink:
Last edited by ddbmike on Sat Jan 03, 2015 5:37 am, edited 1 time in total.
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whiterussian1974
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Re: need input

Post by whiterussian1974 »

1st off, I LOVE your Rob Zombie "House of 1000 Corpses" Avatar.

2nd, I love your K design. 1 of my 1st Threads on this site mentioned drilling holes in the face to vent jets downward along the outside of the cones, then push upward along the tube expending heat and velocity.
You could further add a collar surrounding 300* of the mouth's circumference. And extend a collar down around the outside of your 6 face holes. This increases dwell time by preventing the captured gas from returning to the previous chamber or boreline (contraspectively.)

This pic is example of collared mouth. Should notch a 60* openning to blow across the throat for added turbulance though.
Image
Your (6) face holes are wisely far closer to the boreline to jet down along the cone. Another collar should be machined around outside of holes on face's bottom.

Your technical ?s are probably best answered by Capt Link, Gunny 50, CMV or Byrdman. They have the most commercial machining experience. DrK is also a HIGHLY experienced Noviciate. Maybe even Journeyman Specialist by now, w his 20 or so builds.
Good God, the man is a multi-disciplinary Genius.
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WhisperFan
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Re: need input

Post by WhisperFan »

ddbmike wrote:.... can anyone tell me if they think it will work well enough to trap enough sound and still hold the pressure as is, or do i gotta make 8 new baffles ?
Just so you know ... (you don't list your location) ... but if this is a Form 1 suppressor built in the USA, you may not destroy the old and make new baffles. You may drill further holes if they aren't finished ... but I'm not ever sure if you can weld up holes that are already there.

I'm sure others will chime in

If this isn't a 'Made in the USA' suppressor on a Form 1 - then disregard my advice.

Looks good - maybe a little heavy ... but good.
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whiterussian1974
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Re: need input

Post by whiterussian1974 »

WhisperFan wrote:
ddbmike wrote:.... can anyone tell me if they think it will work well enough to trap enough sound and still hold the pressure as is, or do i gotta make 8 new baffles ?
Just so you know ... (you don't list your location) ... but if this is a Form 1 suppressor built in the USA, you may not destroy the old and make new baffles.

I'm sure others will chime in

If this isn't a 'Made in the USA' suppressor on a Form 1 - then disregard my advice.
Well said. But a good rule of thumb is to presume the Poster is in New Zealand unless otherwise specified. That way no toes get stepped on. :)
(73% of every $ earned in the USA goes to Gov't Overhead, Oversight, Enforcement, etc. Basically, Those Who Would Act to tell Others what they can't do. I've heard ATF Agents refer to themselves as Killjoys in classes we've attended together. Denying or restricting Others' Rights to most Everything Enjoyable accept Sex. Maybe they will become BATFES! :lol:)
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ddbmike
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Re: need input

Post by ddbmike »

boat has a leak
Last edited by ddbmike on Sat Jan 03, 2015 5:41 am, edited 1 time in total.
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T-Rex
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Re: need input

Post by T-Rex »

Nice and shiney :)
What caliber is this intended for?
If anything over 17HMR, your 5.8mm bore is a bit small. Mine is .265" for 22lr.
The baffles look quite stout. With ss, you should be able to shave some weight/material. My Al k's arent thicker than 0.060".
Im curious how those holes will perform. Your baffle face doesnt have much going on.
Look into at least one half circle cut in the face, on the bore diamter, to cause some disruption.
On my 22lr can, I got rid of the blast chamber and have maybe 1/8" gap to the first baffle. No FRP at all.

Please, shoot it and let us know how it is before changes.
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ddbmike
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Re: need input

Post by ddbmike »

no fish
Last edited by ddbmike on Sat Jan 03, 2015 5:40 am, edited 1 time in total.
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gunny50
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Re: need input

Post by gunny50 »

ddbmike,
welcome, where are you located?

In regards to endcap, what threads did you use?
How long is your thread.
Baffles and cap can be adapted to perform better not a problem.
Upload your drawing with the dimensions so we can advice. (baffle - caps)
How long is the thread inside the tube?
Give us more info and most here will give advice and help you to improve on your design.

Gunny
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Re: need input

Post by whiterussian1974 »

ddbmike wrote:probably should have not painted it black either :lol:
You can always bead blast or sand it off. Wear will take some off over time.
CeraKote would be MY preference. Use a 3 or 4 color scheme if for hunting or just to look cool. I like: tan, loam, dark gray(or black) and olive.
I just tied and draped yarn threads over mine.
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Image
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ddbmike
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Re: need input

Post by ddbmike »

in the Detroit river
Last edited by ddbmike on Sat Jan 03, 2015 5:40 am, edited 1 time in total.
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LostintheAOs
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Re: need input

Post by LostintheAOs »

ddbmike wrote:tecumseh CA
Just to clarify for others, he's in Canada, not California.
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Re: need input

Post by Bendersquint »

LostintheAOs wrote:
ddbmike wrote:tecumseh CA
Just to clarify for others, he's in Canada, not California.
Silencers are illegal in Canada, only exemption is having a permit issued before 1995.

Hopefully you are one of the lucky ones to get a grandfathered permit!
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whiterussian1974
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Re: need input

Post by whiterussian1974 »

ddbmike, you need to say that you live in New Zealand. Otherwise you'll have members upset w certain things which you may say.

Hence...
whiterussian1974 wrote:
WhisperFan wrote: (you don't list your location) ... I'm sure others will chime in...
Well said. But a good rule of thumb is to presume the Poster is in New Zealand unless otherwise specified. That way no toes get stepped on. :)
In the Future, it's best to PM Members asking for your address.
Otherwise even non-Canucks will get upset if you don't strictly follow the Law of your Country.
Yet, in Criminal Law classes we were taught that no crime ever exists until a Jury renders a Guilty Verdict.
Until then it's only a Potential Breech of Statute.

I've never arrested a single person for committing a crime. Only for Probable Cause to Believe that a Breech of Law has occurred. (Or Execution of a Warrant.)
Then a Magistrate must make a Preliminary Hearing to determine if They (3rd Person Formal) concur that Probable Cause exists to remand to (County, Federal, etc.) Custody until such time that a Trial Judge can decide if Bail is acceptable to insure the Accused return for all future Hearings.
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