K-Baffles step-by-step

tomovich · Post by **tomovich** » Thu Oct 30, 2008 10:06 am

Thirds (not to hijack.......)?

pneumagger · Post by **pneumagger** » Thu Oct 30, 2008 10:20 am

That's a great Idea.

rmorr01 · Post by **rmorr01** » Wed Jan 21, 2009 12:29 pm

Outstanding, Please Sticky this post!!

okw · Post by **okw** » Wed Jan 21, 2009 3:45 pm

rmorr01 wrote:Outstanding, Please Sticky this post!!

That would be nice! I have to keep searching for this thread every time I want to double check something.

chalkmuncher · Post by **chalkmuncher** » Mon Feb 16, 2009 5:17 am

Mtdew wrote:
Phister wrote:I never have figured out- what is this hole for?

It's actually a hole and a scoop in one machining setup.

The port allows the directed jet of gas into the outside chamber.

I'll retract what I originally said here in lieu of the following:

It might be misunderstood from the images that the 45 degree hole involves only one side of the baffle, ie produces a hole that diverts gas directly into the outer chamber rather than across the bore.

I was confused, at least, and was trying to understand how a baffle that diverted gas straight out the side of the bore hole into the outer chamber would work. I think the answer is: it wouldn't, very well.

WhisperFan · Post by **WhisperFan** » Mon Feb 16, 2009 8:33 am

chalkmuncher wrote: Most K-baffles I see have a scoop on the face that directs a jet *across* the path of the bullet, through a hole in the wall of the cone, and into the outer chamber.

That's exactly what this one does.

chalkmuncher wrote:This one directs the jet *away* from the bullet path directly into the outer chamber.

No - you seem to be confused.

Did you look at the finished product? It is made exactly the same way as ALL other K-Baffles I have seen (that use this method) It is milled from the under side ... that might be what is 'throwing' you off.

chalkmuncher · Post by **chalkmuncher** » Mon Feb 16, 2009 11:00 am

yes... I misunderstood, now I see how you are milling the hole in the cone and the scoop on the face in one step. I thought you were drilling only to the bore and the mouse hole was the exit hole. doh...

pedro_viana · Post by **pedro_viana** » Sat Mar 14, 2009 3:30 pm

Hi,
I am new here and I also just got my lathe. I was making some baffles like the ones in this post, but I got stuck on set 9. I am making these baffles out of stainless steel, and I am getting allot of chatter when doing this procedure. Could you give me some info on the forming tool you are using?

Thanks alot,
Pedro

dave22 · Post by **dave22** » Sat Mar 14, 2009 5:40 pm

when you get chatter, increase feed and / or decrease rpm.

Dave

WhisperFan · Post by **WhisperFan** » Sat Mar 14, 2009 6:51 pm

What type of lubrication/coolant are you using?

On stainless - I find a 'flood' coolant system works better for me than a "cool mist" system

pedro_viana · Post by **pedro_viana** » Sun Mar 15, 2009 6:40 pm

Thanks for the reply. I am using a Brazilian cutting fluid as I do not like to use coolant due to the mess it makes, as I live in a apartment building and my "shop" is kind of small. Yesterday when I posted this I got back on the lathe and tried using the tool upside down on the other side of the baffle, and it worked beautifully. I will see if I can get pictures once I finish my baffles.

formula156 · Post by **formula156** » Fri Mar 20, 2009 9:32 pm

Any way you could post a few more pics of the mouse hole that's at the 45Â° angle, from the back and sides? Im still not sure exactly how that hole meets up with the bore hole.

Thanks!

chalkmuncher · Post by **chalkmuncher** » Wed Mar 25, 2009 7:52 pm

WhisperFan wrote:
kiwi collector wrote:Hello, thanks for the info, can I ask please what size is the mill cutter that you use for the mouse holes and for the slot at the top of the K baffle, is this important in regard to the size of the bore, are they both the same size or is one smaller that the other THANKS
.3125" for both I use a size slightly smaller than the bore size.

Anything wrong with using the same diameter as the bore hole? Is there a point where the scoop/port get too big?

Also, probably more importantly:

How much play do you allow between the outer diameter of the baffle and the inner diameter of the tube? Is there a sweet spot that reduces binding (if you try to remove the baffles after use) without compromising bore concentricity?

Fulmen · Post by **Fulmen** » Thu Apr 23, 2009 3:30 am

Hope you don't mind if I crash this party a bit. I'm working on the following baffles for a 22-silencer:

Most of them are done, so drilling is next.

First the Dater-hole in the first baffle: I'm going for one or two straight baffles as a blast-chamber, the dater-hole should still be in the first K-baffle and not the straight one?

The mouse-hole seems pretty straight-forward, but the scoop is a bit more tricky. Milling at an angle isn't something I'm set up to do, so I was wondering how effective a straight hole (90Â° on the back wall) would work. Something like this:

Update:
I've completed all the baffles except for the drilling, thought you'd like a look:

J Krammes · Post by **J Krammes** » Sat Apr 25, 2009 7:31 pm

Tag for info... Great pics guys.

Jeremy

Fulmen · Post by **Fulmen** » Sun Apr 26, 2009 3:12 am

Actually I've desided to mill the scoop at an angle after all. It's a bit dodgy, but the idea was to remove the chuck form the lathe and mount it in a tilting vice. After a few cad-experiments I've desided on a 4mm scoop at 60Â° and a 6mm mousehole.

Fudmottin · Post by **Fudmottin** » Sun Apr 26, 2009 4:49 am

I imagine some tolerances can afford to be sloppy while others need to be tight. I wouldn't spend a lot of time worrying about the non critical stuff.

Are the pictures showing white baffles depicting Delrin?

Also, do you know if there is any word at what point a K baffle becomes less effective than just a cone? Or is there no such point?

And for caliber, at what point do you abandon trying to use a K baffle?

Golf_1911 · Post by **Golf_1911** » Mon Apr 27, 2009 2:08 pm

Could you list the tools information that you use?
Did the supplier have an online shop?

Golf_1911 · Post by **Golf_1911** » Mon Jun 08, 2009 2:35 pm

What is the tool that use on step 2 , 3 , 4 , 6 , 8 and 10?

Could you recommend the online supplier?

RavenArmament · Post by **RavenArmament** » Thu Jun 18, 2009 12:13 am

Step 2: drill bit
Step 3: counter sink
Step 4: turning tool
Step 6: turning tool
Step 8: turning or facing tool
Step 10: drill bit or end mill

You'll have to find a supplier in your country.

pmercer · Post by **pmercer** » Thu Jun 18, 2009 5:59 am

Fudmottin wrote:Are the pictures showing white baffles depicting Delrin?

Looks like sandblasted alu to me.

L1A1Rocker · Post by **L1A1Rocker** » Thu Jun 18, 2009 12:58 pm

STICKY!

WhisperFan · Post by **WhisperFan** » Thu Jun 18, 2009 4:46 pm

pmercer wrote:
Fudmottin wrote:Are the pictures showing white baffles depicting Delrin?
Looks like sandblasted alu to me.

Yep - just a quick sandblast ... not enough to change dimensions, just clean them up some.

delta9mda · Post by **delta9mda** » Thu Jun 18, 2009 8:50 pm

freaking pretty!!!

RavenArmament · Post by **RavenArmament** » Fri Jun 19, 2009 9:19 am

OK, I'm mildly retarded. I tried my hand at making some Ks last night (minus the countersink). What angle did you set to slide to? I tried 10, 20, and 30 degrees but they didn't look right. I figured 60 degrees between the cone and the 90 so half the 60 and cut at a 30 degree angle but it looked very steep.

K-Baffles step-by-step

Re: K Baffles