K-Baffles step-by-step

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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WhisperFan
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K-Baffles step-by-step

Post by WhisperFan »

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Last edited by WhisperFan on Sat Aug 27, 2022 5:44 am, edited 6 times in total.
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WhisperFan
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Post by WhisperFan »

After a light sandblast, here are the finished products


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Last edited by WhisperFan on Sat Aug 27, 2022 5:45 am, edited 3 times in total.
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Post by James Jones »

Very cool pics. I tried the countersink thing reciently for a buddies project and it diden't work to well with A-286 material , ended up using a carbide tool and the compound.

Thise look pretty sizable what are they going to be used form"
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041x
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Post by 041x »

Thanks for the pics. Is the angled hole drilled at a 45?
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WhisperFan
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Post by WhisperFan »

041x wrote:Thanks for the pics. Is the angled hole drilled at a 45?
Yup
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Post by chingon »

Are you taking orders ?
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Post by akraven »

Excellent write up. Is the countersink tool a standard counter sink or a special tool? To get a sense of scale for me what diameter is the stock you started with? Thanks again. akraven
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Post by WhisperFan »

chingon wrote:Are you taking orders ?
Wouldn't that be great ...... but alas, I make them on Form 1's
akraven wrote:Excellent write up. Is the countersink tool a standard counter sink or a special tool? To get a sense of scale for me what diameter is the stock you started with? Thanks again. akraven
The countersink is a single flute 60 degree 1.25" dia sink. The stock diameter is 1.5" 6061. The chuck is 6"
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Post by Hush »

Nice work, are you planning on coating the baffles?
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Post by L1A1Rocker »

VERY freaking cool!!! Thank you!
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Post by bakerjw »

Damn nice looking and an excellent photo tutorial.
Thanks
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Post by ranb »

Very nice setup there. I use a Grizzly combo lathe/mill, no where near as nice. Through a little bit of experimentation I ended up making my K baffles nearly exactly the same as above. I posted a photo tutorial on my website, but since the site got so little traffic, and I never really received any input on making silencers, I took it down. This website is a much better source of info.

I am rarely able to make perfectly centered holes with a drill bit in a tail piece stock. I end up using a 1/8th tool bit to widen and center the hole.

The inside reamer works great until I get about an inch wide. I finish larger baffles on the inside with the tool post feed in at the appropriate angle.

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Post by GANADERO »

wowwwwww nice job mate you are very polite an generous you have all
Devices congrats :D :D :D :D :D :D :D :D :D :D :D
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Post by GANADERO »

HELLO MATE i have a cuestion

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By ganadero at 2007-12-12


tanks cheers :D :D :D :D :D :D :D
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Post by Conqueror »

^^^He already posted the answer:
The countersink is a single flute 60 degree 1.25" dia sink.
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Post by GANADERO »

Conqueror: tanks very much for you answer
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Post by Mtdew »

Conqueror wrote:^^^He already posted the answer:
The countersink is a single flute 60 degree 1.25" dia sink.
I prefer using the compound and a boring tool myself.
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Post by Conqueror »

Any advantage to that? Seems a 60 degree reamer or countersink would yield similar results with less effort.
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Post by Mtdew »

Conqueror wrote:Any advantage to that? Seems a 60 degree reamer or countersink would yield similar results with less effort.
I tried both and using the compound/boring bar was about 2x faster
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Post by ranb »

The reamer makes quick smooth work with small baffles, but when boring larger holes it tends to bind and gall, especially aluminum. I found that using a tool bit fed in at the required angle is faster and less effort for baffles larger than one inch.

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Post by 1911fan »

Excellent photos. I'll be sending in an F1 after my Wolverine is in my hands, so I can make a can for my .308.
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Post by wolf »

ranb wrote:The reamer makes quick smooth work with small baffles, but when boring larger holes it tends to bind and gall, especially aluminum. I found that using a tool bit fed in at the required angle is faster and less effort for baffles larger than one inch.

Ranb
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Post by WhisperFan »

Thanks for all the comments.

I like the countersink only because I find it slightly faster. Others may find a compound rest faster, but I think a sharp single flute countersink is pretty fast. A multi-fulte (especially a 6-flute) would be much slower.
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Post by cocoboots »

do you have any photos of the complete stack? what did you do for a blast baffle?

TIA
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