homemade K baffle suppressor

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coastline
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Posts: 6
Joined: Sun May 08, 2022 11:19 am

homemade K baffle suppressor

Post by coastline »

Hello everyone
First my English is not good so my grammar might be strange sorry.
I just made a K baffle suppressor and shoot it with my homemade pistol here is my set up.
K baffle:OD 23.15mm ,ID 9.3mm ,length 20mm,cone angle 60°.
can: OD 24mm,ID 23.15mm,length 200mm,blast chamber 72mm.
shooting with nail gun blank bullet 6.8*25mm(velocity about 800FPS~2000FPS).
projectile: 8mm steel ball .
My problem is it still can't cut down the sound like the factory made,I had try the M baffle before but the effect is bad.
I think the problem might be 1.The gape between steel ball and the bore of baffle are too big.2.The volume of the can is too small 3.The blast chamber is too long
4. Projectile velocity is supersonic so need to shoot with subsonic bullet 5.No enough baffle.
Those are what I assume the reason why it can't not be work.
Please give me some advise thanks.
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Historian
Silent But Deadly
Posts: 3503
Joined: Mon Mar 29, 2010 10:37 pm

Re: homemade K baffle suppressor

Post by Historian »

For a first pass it is a good start.

Please tell what calibre your home made
weapon is. From the dimensions you post
one would guess it would not be used
for any larger calibre than .22.

Extrapolating from the myriad of past designs
you should shed that long spring and insert more
K-Baffles.

Volume and turbulence are to be emphasized.

On the other hand for simplicity and efficiency you might want to read up
on Donald Walsh's US. patent number is EP0107273A1 .
Google it and you can download PDF.

Walsh's creative and unique design should to be considered especially
as home machining precision and safe alignment
will be a major safety problem. Then you can use thin steel tube
of any diameter and length to get more volume easily.
Major benefit you can eliminate the serious issues of alignment
and baffle strikes. They will really
ruin your day.

Thank you for showing.
Keep us updated with your progress.
coastline
New Member
Posts: 6
Joined: Sun May 08, 2022 11:19 am

Re: homemade K baffle suppressor

Post by coastline »

Historian wrote: Tue May 10, 2022 9:26 am For a first pass it is a good start.

Please tell what calibre your home made
weapon is. From the dimensions you post
one would guess it would not be used
for any larger calibre than .22.

Extrapolating from the myriad of past designs
you should shed that long spring and insert more
K-Baffles.

Volume and turbulence are to be emphasized.

On the other hand for simplicity and efficiency you might want to read up
on Donald Walsh's US. patent number is EP0107273A1 .
Google it and you can download PDF.

Walsh's creative and unique design should to be considered especially
as home machining precision and safe alignment
will be a major safety problem. Then you can use thin steel tube
of any diameter and length to get more volume easily.
Major benefit you can eliminate the serious issues of alignment
and baffle strikes. They will really
ruin your day.

Thank you for showing.
Keep us updated with your progress.
My homemade pistol is shooting 8mm steel ball so my calibre is 8mm.
So I will add more baffle in the blast chamber though.
The baffle strikes is come from last time the bore is 8.5mm but my projectile is not stable enough so i drill it bigger to 9.3mm.
Thank for reply.
Historian
Silent But Deadly
Posts: 3503
Joined: Mon Mar 29, 2010 10:37 pm

Re: homemade K baffle suppressor

Post by Historian »

A quick question:
I am curious what do you mean by " 8mm steel ball"
from a pistol. Those items I have used with a sling shot so I am
inferring that you could mean say a .32 calibre pistol such as
Beretta Tomcat FDE 32 Auto (ACP) 2.9in FDE Pistol?

Am I off target ( pun intended :) ).

Thank you.
alordnapa
Silent But Deadly
Posts: 192
Joined: Tue Sep 30, 2014 11:01 am

Re: homemade K baffle suppressor

Post by alordnapa »

I think he is saying that he has a home-brewed gun that fires an 8mm Ball ( Bearing?) propelled by a .22 nail gun blank, sort of a poor man's improvised firearm. This being the case, I suppose its not surprising that he has a somewhat unstable projectile, probably fired from a smoothbore tube of some kind. I for one would love to see what he has built!
Historian
Silent But Deadly
Posts: 3503
Joined: Mon Mar 29, 2010 10:37 pm

Re: homemade K baffle suppressor

Post by Historian »

alordnapa wrote: Wed May 11, 2022 3:45 pm I think he is saying that he has a home-brewed gun that fires an 8mm Ball ( Bearing?) propelled by a .22 nail gun blank, sort of a poor man's improvised firearm. This being the case, I suppose its not surprising that he has a somewhat unstable projectile, probably fired from a smoothbore tube of some kind. I for one would love to see what he has built!
Thank you for the clarification!
If the is the case I get trepidations for his safety.
Zip guns* in the streets of NY, 1940s, were a safer design.

That was a time ,at the tail end of the depression,
which taught resourcefulness. For example
one made a scooter from an orange crate,
piece of 2 x 3,a pair of 'appropriated' steel roller skates from one's sibling.
and nailed half at each end. When spring time came no broom handle
was safe, 'pimple balls' cut in half, and the streets were off limits to cars,
and stick ball ruled. Lousy stepping out a time machine.

8mm steel bearings are more appropriate for example a
RS-X8 LONG RANGE 'SNIPER' SLINGSHOT.** Natural suppression built in,
and you can take down small game.

Long around way of saying be judicious, be safe to our member.


*"One of the most common (and reliable) methods of constructing a zip gun is to attach a door bolt
to a wooden handle having a barrel made from a section of steel tube securely taped to it.
Elastic bands are tied around the handle of the door bolt to act as a striker." -WIKI

** << https://www.hammersurvival.com/collecti ... -slingshot >>
coastline
New Member
Posts: 6
Joined: Sun May 08, 2022 11:19 am

Re: homemade K baffle suppressor

Post by coastline »

Historian wrote: Wed May 11, 2022 10:32 am A quick question:
I am curious what do you mean by " 8mm steel ball"
from a pistol. Those items I have used with a sling shot so I am
inferring that you could mean say a .32 calibre pistol such as
Beretta Tomcat FDE 32 Auto (ACP) 2.9in FDE Pistol?

Am I off target ( pun intended :) ).

Thank you.
Just push a steel ball in to a barrel and charge it with blank bullet.
coastline
New Member
Posts: 6
Joined: Sun May 08, 2022 11:19 am

Re: homemade K baffle suppressor

Post by coastline »

alordnapa wrote: Wed May 11, 2022 3:45 pm I think he is saying that he has a home-brewed gun that fires an 8mm Ball ( Bearing?) propelled by a .22 nail gun blank, sort of a poor man's improvised firearm. This being the case, I suppose its not surprising that he has a somewhat unstable projectile, probably fired from a smoothbore tube of some kind. I for one would love to see what he has built!
Correct I didn't get a rifling yet so is unstable now but it is not going to baffle strike now.
coastline
New Member
Posts: 6
Joined: Sun May 08, 2022 11:19 am

Re: homemade K baffle suppressor

Post by coastline »

Historian wrote: Wed May 11, 2022 4:47 pm
alordnapa wrote: Wed May 11, 2022 3:45 pm I think he is saying that he has a home-brewed gun that fires an 8mm Ball ( Bearing?) propelled by a .22 nail gun blank, sort of a poor man's improvised firearm. This being the case, I suppose its not surprising that he has a somewhat unstable projectile, probably fired from a smoothbore tube of some kind. I for one would love to see what he has built!
Thank you for the clarification!
If the is the case I get trepidations for his safety.
Zip guns* in the streets of NY, 1940s, were a safer design.

That was a time ,at the tail end of the depression,
which taught resourcefulness. For example
one made a scooter from an orange crate,
piece of 2 x 3,a pair of 'appropriated' steel roller skates from one's sibling.
and nailed half at each end. When spring time came no broom handle
was safe, 'pimple balls' cut in half, and the streets were off limits to cars,
and stick ball ruled. Lousy stepping out a time machine.

8mm steel bearings are more appropriate for example a
RS-X8 LONG RANGE 'SNIPER' SLINGSHOT.** Natural suppression built in,
and you can take down small game.

Long around way of saying be judicious, be safe to our member.


*"One of the most common (and reliable) methods of constructing a zip gun is to attach a door bolt
to a wooden handle having a barrel made from a section of steel tube securely taped to it.
Elastic bands are tied around the handle of the door bolt to act as a striker." -WIKI

** << https://www.hammersurvival.com/collecti ... -slingshot >>
https://www.youtube.com/watch?v=V8IzRT_4rgs
I made a pistol just like this.
alordnapa
Silent But Deadly
Posts: 192
Joined: Tue Sep 30, 2014 11:01 am

Re: homemade K baffle suppressor

Post by alordnapa »

I am going to assume that Coastline is in a denied area, where he can't walk down to the local sporting goods store and buy a modern firearm. ( Either that, or he is a hard-core iconoclast) Most people who build a weapon like this only plan on shooting one bad-guy and taking a real weapon off their dead body. Our guy wants to suppress his muzzle-loading zipgun; So be it. To me this implies he is just building the best suppressed firearm he can under his circumstances, and actually wants it as a reusable shooter. All power to him. I don't suspect that rifling his zipgun will stabilize his hardened steel projectile very much unless he sabots them. All I can say is "don't put your eye out!". I don't hold out much hope that he will have good luck with baffles on a slick-tubed muzzle loading improvised gat, and recommend that he finds another approach, like a matching re-packable disposable suppressor, or a couple of coke cans taped end-to-end.
Historian
Silent But Deadly
Posts: 3503
Joined: Mon Mar 29, 2010 10:37 pm

Re: homemade K baffle suppressor

Post by Historian »

Alordnapa,
you best summarize it with your kind advice:

"All I can say is "don't put your eye out!".
At least we have tried to offer our best advice.
Historian
Silent But Deadly
Posts: 3503
Joined: Mon Mar 29, 2010 10:37 pm

Re: homemade K baffle suppressor

Post by Historian »

In this vein here is an interesting video of making a Utah Pistol
that Coastline might glean some useful and safe procedures.
Best


<< https://www.youtube.com/watch?v=Pivxr0y ... ivxr0yhFKw >>
alordnapa
Silent But Deadly
Posts: 192
Joined: Tue Sep 30, 2014 11:01 am

Re: homemade K baffle suppressor

Post by alordnapa »

Coastline,

How about posting a picture of your gun/launcher? I don't think you will get a steel ball, out of an unrifled barrel, stabile enough to prevent collisions with your suppressor design. If you can get a piece of rifles .22 barrel, you might get good results with a nail blank and an air-rifle pellet or cast slug. You can use a piece of the barrel to make a mold for your projectiles with a little work.
coastline
New Member
Posts: 6
Joined: Sun May 08, 2022 11:19 am

Re: homemade K baffle suppressor

Post by coastline »

alordnapa wrote: Mon May 16, 2022 8:59 pm Coastline,

How about posting a picture of your gun/launcher? I don't think you will get a steel ball, out of an unrifled barrel, stabile enough to prevent collisions with your suppressor design. If you can get a piece of rifles .22 barrel, you might get good results with a nail blank and an air-rifle pellet or cast slug. You can use a piece of the barrel to make a mold for your projectiles with a little work.
ImageImageImage
alordnapa
Silent But Deadly
Posts: 192
Joined: Tue Sep 30, 2014 11:01 am

Re: homemade K baffle suppressor

Post by alordnapa »

So how do you fire it? Wack it with a hammer? :)
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