Search found 76 matches

by Kuraki
Mon Feb 23, 2015 2:57 pm
Forum: Silencersmithing Forum
Topic: HELP turning titanium. Locking up.
Replies: 39
Views: 2931

Re: HELP turning titanium. Locking up.

Great opportunity for a general shop project. Spend some time turning something like this with solid bronze resting points: http://www.practicalmachinist.com/vb/attachments/f38/82721d1375568823-steady-rest-design-questions-steadyleft.jpg Into something like this with bearings: http://www.toolsandmod...
by Kuraki
Wed Feb 11, 2015 10:45 pm
Forum: NFA Weapons
Topic: Machine gun transfer in WI
Replies: 3
Views: 786

Re: Machine gun transfer in WI

It's 941.26-3 that states the prohibition on machine guns does not apply to people "duly authorized by chief of police...." Prior to JB Van Hollen's term as AG, that was interpreted to mean that the CLEO signoff on the Form 4 was sufficient to show authorization. Van Hollen's opinion was that no, it...
by Kuraki
Tue Jan 06, 2015 11:01 am
Forum: Silencersmithing Forum
Topic: First ATF Ruling of 2015......applies to everyone in this forum!
Replies: 94
Views: 9439

Re: First ATF Ruling of 2015......applies to everyone in this forum!

I would disagree that this affects Form 1 can builders on the following two points: 1. While silencers are "firearms" according to the GCA, the ruling goes and defines "firearms" for the purpose of the ruling as, paraphrasing, "...designed to expel a projectile by..." which a silencer of course is n...
by Kuraki
Wed Dec 31, 2014 1:35 pm
Forum: Silencersmithing Forum
Topic: Please Critique the Rimfire Can I'm Building
Replies: 25
Views: 3703

Re: Please Critique the Rimfire Can I'm Building

Is there a cam in your 3 lug setup or is that what the spring is for? Axial retention on both the baffles and the mount?
by Kuraki
Wed Dec 31, 2014 12:36 pm
Forum: Silencersmithing Forum
Topic: form 1 300blk
Replies: 18
Views: 3146

Re: form 1 300blk

My form 1 was approved a little bit ago, and i have been practicing on threading on my lathe. I have the external threads down, but i have really struggled bad with internal threads. Seeing as how this will not be the last suppressor i build, i decided to abandon the whole making it serviceable and...
by Kuraki
Wed Dec 31, 2014 11:52 am
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

There is that "patented baffle" that you would need to work around. Sure, you can take it apart yourself. You are still into the $200 F1 paperwork. 5x the costs? I know what it costs to make a Trident if you do a large run of them and I will tell you that the 5x margin is not there. Maybe if you ju...
by Kuraki
Wed Dec 31, 2014 10:44 am
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Well, I certainly don't intend to cause any distress to the forum over IP. And given that there are recent patents on things that could be construed as K baffles, Cone baffles, K-Cone hybrids, Monocores, etc, I'll just keep my projects to myself and off line.
by Kuraki
Tue Dec 30, 2014 9:10 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Or you could just buy a Trident and have someone jailbreak it for you. Even if I did want to wait for a paper form and spend 5x as much, why wouldn't I crack it open myself? I have zero interest in purchasing cans, dealing with SOTs I don't know, or driving halfway across the state to deal with the...
by Kuraki
Tue Dec 30, 2014 7:36 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Ok. Last rev I think. Did some more looking at Omega baffles. This representation is 8.47" long, 12 oz, with 17-4 SST Omega baffles, SST piston, everything else 6061 or 7075 aluminum. Baffles are .040" thick except at the top hat, those are .062". I would cut the SST bar into 1.25x1.25 chunks, heat ...
by Kuraki
Mon Dec 29, 2014 1:40 pm
Forum: Silencersmithing Forum
Topic: Is it possible to Re-baffle a suppressor?
Replies: 27
Views: 2357

Re: Is it possible to Re-baffle a suppressor?

Now, I completely understand "extra" silencer parts and that is somewhat akin to having an SBR AR15 upper laying around with a regular, Title 1 AR lower also laying around, and no "pistol" or registered lower. Just to be clear, concerning SBR's: This is covered by "US vs Thompson-Center Arms" It wa...
by Kuraki
Mon Dec 29, 2014 1:09 pm
Forum: Silencersmithing Forum
Topic: Is it possible to Re-baffle a suppressor?
Replies: 27
Views: 2357

Re: Is it possible to Re-baffle a suppressor?

I thought that used to be the case. How was it abused?
by Kuraki
Mon Dec 29, 2014 12:10 pm
Forum: Silencersmithing Forum
Topic: Handi rifle silencing
Replies: 4
Views: 637

Re: Handi rifle silencing

Port size and quantity is something you would have to determine based on what your overall goal of the project is. Finished OAL, how much back bore in the barrel, how your device disassembles for cleaning, etc. I also wouldn't want a barrel length that would keep regular .44 ammunition subsonic, sin...
by Kuraki
Mon Dec 29, 2014 11:58 am
Forum: Silencersmithing Forum
Topic: Is it possible to Re-baffle a suppressor?
Replies: 27
Views: 2357

Re: Is it possible to Re-baffle a suppressor?

With a form 1 do i have to decide what type of baffle i want to replace them with or can i experiment with different types and mixes? You can NOT experiment with a Form1, you are giving the ability to make 1 can, you can't replace broken parts, try new stacks nothing. This is why so many Form1 cans...
by Kuraki
Sun Dec 28, 2014 3:34 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Screw it. People seem to like the Octane. I'll just do something similar. Less work than Ks anyway, no manual turning just CNC milling.


10 oz. 8.3" OAL. All aluminum.
by Kuraki
Sat Dec 27, 2014 12:00 am
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Thats exactly what I planned to do.
by Kuraki
Fri Dec 26, 2014 10:05 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

I tied to calculate air volume with Inventor but if it's possible I can't figure out how. I think I can figure it out longhand however.
by Kuraki
Fri Dec 26, 2014 7:19 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Ok, changed the angle, which made them longer. Extended a sleeve from the barrel/mount end .500" to space the first baffle out, modified the muzzle end cap so it's flat, and if I modify 1 K baffle on the cone end it will insert inside that. But then I'm down to 6 baffles at the same 8.5" OAL. I don'...
by Kuraki
Fri Dec 26, 2014 2:36 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Thanks gunny.

Here's the updated version. Trying to take all suggestions into account. All aluminum now (steel booster). Projected 11 oz weight. Baffles all have .060" walls. Added 5 degree taper to base wall. .030" radius to cone/base junction. Cone is 50 degrees. Stuffed 8 into 8.5" OAL.
by Kuraki
Wed Dec 24, 2014 4:19 am
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Thanks CMV, that's exactly the kind of feed back I was hoping for. 1-2: I modeled the K from pictures. I didn't understand the point of a taper on the base, but I do understand a radius. I will redraw based on your suggestions. Yes, it's .250, I can bump to .375. 3. I will single point bore it. 4. T...
by Kuraki
Tue Dec 23, 2014 11:10 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Ok, perfect. Thanks guys.
by Kuraki
Tue Dec 23, 2014 9:01 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

So the cup point of the set screw interfaces with the radial cuts on the flange of the booster? Isn't there a danger of it indexing during cycling and not returning to the correct orientation? How much linear travel is there typically?

That's what I couldn't ascertain from googling.
by Kuraki
Tue Dec 23, 2014 7:40 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Re: Another Review/critique request. 9mm boosted can.

Crap I just realized those dowels will not leave clearance for a spring.

I've never actually seen one of these in person. How do they typically prevent the suppressor from just spinning around on the booster?
by Kuraki
Tue Dec 23, 2014 7:37 pm
Forum: Silencersmithing Forum
Topic: Another Review/critique request. 9mm boosted can.
Replies: 44
Views: 2158

Another Review/critique request. 9mm boosted can.

Please review/critique my design for a 9mm, boosted suppressor. Currently modeled to have 7075 aluminum K baffles, titanium tube (0.045 wall after machining), titanium booster assembly/endcap and an aluminum muzzle endcap. Stainless steel booster. More views and/or detail available. I'm not showing ...
by Kuraki
Tue Dec 23, 2014 1:20 am
Forum: Silencersmithing Forum
Topic: Can Titanium Tube be joined to Stainless Endcaps without threading?
Replies: 20
Views: 1812

Re: Can Titanium Tube be joined to Stainless Endcaps without threading?

No reason not to thread. If you can thread stainless you can thread Ti.

Drilling Ti is a bitch. Single point turning and other free cutting operations are no problem.
by Kuraki
Mon Dec 22, 2014 1:43 pm
Forum: Silencersmithing Forum
Topic: Suppressor and accuracy?
Replies: 19
Views: 2667

Re: Suppressor and accuracy?

snip Kuraki The addition of or the removal of weight can affect harmonics of a barrel you need to determine which.If your gun was .6 and now 1.5 did any other work in between happen like threading the barrel.When you remove material from the muzzle the bore will flare affecting accuracy.If it was t...