Suppressor design and development - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > Miscellaneous > Outdoor Sports and Recreation
Notices

Reply
 
Share Thread Tools Display Modes
Old 02-20-2009, 08:24 PM   #1 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
Suppressor design and development

This thread is for those who can or will LEGALLY make a firearm silencer. It will be for designs and ideas for baffles, attachments and all other aspects of a sound suppressor.
This is NOT for information to be used in the illegal manufacturing of ANYTHING. All builders should understand the guidelines required for legal ownership and manufacturing of sound suppressors. None of the posters in this thread are responsible for any of your stupidity or legal ramifications.

This thread is NOT for you to be asking "how can I legally build a silencer", you should already know that answer and have the tax stamp IN HAND before going anything beyond design.


So, lets have fun
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.

Last edited by usmcdoc14; 02-20-2009 at 08:45 PM.
usmcdoc14 is offline   Reply With Quote
Old 02-20-2009, 08:26 PM   #2 (permalink)
POIT!
 
LiLBucket's Avatar
 
Join Date: Sep 2006
Member # 79539
Location: Roanoke, VA
Posts: 4,343
Blog Entries: 1
Great.

Another thread I won't be able to afford.

but somehow will

I'm still waiting on my paperwork
__________________
For the best deal on 8 lug disc brakes click here--> www.lugnut4x4.com
LiLBucket is offline   Reply With Quote
Sponsored Links
Old 02-20-2009, 08:31 PM   #3 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
As of this writing I am waiting on my tax stamp. I have done NO machining and am working only on design. All parts I have are nothing more than pipe. This will be for a 22lr.

I plan on making a mono stack something like this:


But the blast chamber will be centered with all other chambers "skimming" the bore instead of overlapping like this


So, questions:
How tight should the bore be for a 22lr? .24 good?

What should I use as a sleeve retaining compound to hold the bore liner and initial blast chamber ? Loc-tite?

Will stainless work for a bore liner and blast chamber liner or should I go with titanium ?

Should I undersize the mono stack and insert O-rings between each chamber to facilitate easier cleaning and to give a MUCH better seal than just a slip fit?
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.

Last edited by usmcdoc14; 02-20-2009 at 08:48 PM.
usmcdoc14 is offline   Reply With Quote
Old 02-20-2009, 08:32 PM   #4 (permalink)
Runner? What runner?
 
4runner's Avatar
 
Join Date: May 2000
Member # 946
Location: WTF TX USA
Posts: 6,215
Send a message via AIM to 4runner
maybe someone should post up some photos of baffles from a suppressor so that others can see what they look like?



if you can look past the grit buildup...
Attached Images
  
__________________
4.3runner
4runner is offline   Reply With Quote
Old 02-20-2009, 08:41 PM   #5 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
Quote:
Originally Posted by 4runner View Post
maybe someone should post up some photos of baffles from a suppressor so that others can see what they look like?



if you can look past the grit buildup...
if I recall correctly you may be needing some new baffles for that one as well
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.
usmcdoc14 is offline   Reply With Quote
Old 02-21-2009, 05:15 AM   #6 (permalink)
Zeus of the Sluice
 
ItsaCJ6's Avatar
 
Join Date: Aug 2001
Member # 6340
Location: Back in the woods
Posts: 3,866
Blog Entries: 12
Some how that looks suspiciously like an autoclave part.


__________________
Marc

In what appears to have been an understatement, the plant operator described the situation at the Number 4 reactor as "not so good."

Super conversion calculator website

Love and kisses, Zaphod..
ItsaCJ6 is offline   Reply With Quote
Old 02-21-2009, 05:39 AM   #7 (permalink)
Registered User
 
Join Date: Oct 2000
Member # 2099
Location: Pearland Tx
Posts: 849
Quote:
Originally Posted by usmcdoc14 View Post
As of this writing I am waiting on my tax stamp. I have done NO machining and am working only on design. All parts I have are nothing more than pipe. This will be for a 22lr.

I plan on making a mono stack something like this:


But the blast chamber will be centered with all other chambers "skimming" the bore instead of overlapping like this


So, questions:
How tight should the bore be for a 22lr? .24 good? depends on how straight you can bore the hole and how concentric the threads are. For mine, I bought a 20" GM barrel for my 10/22. I'm going to cut it off at 12" inches, then use the remainder for the core of my suppressor. I'm going to open it up to .25 I think. This should get rid of the rifling, but still be tight enough. I think I've read that up to about .265-.270 is good for 22lr.

What should I use as a sleeve retaining compound to hold the bore liner and initial blast chamber ? Loc-tite?

Will stainless work for a bore liner and blast chamber liner or should I go with titanium ?

Should I undersize the mono stack and insert O-rings between each chamber to facilitate easier cleaning and to give a MUCH better seal than just a slip fit? I would definetly put o-rings on each end to make sure everything seals nicely. Now if you're talking about mulitple o-ring down the length of the body, I could see them getting filled with gunk and making it real hard to slip the outer tube off
BTW, I'm also waiting on my tax stamp for a .22lr
LostIt is offline   Reply With Quote
Old 02-21-2009, 05:44 AM   #8 (permalink)
Registered User
 
Join Date: Oct 2000
Member # 2099
Location: Pearland Tx
Posts: 849
Quote:
Originally Posted by usmcdoc14 View Post
This thread is NOT for you to be asking "how can I legally build a silencer", you should already know that answer and have the tax stamp IN HAND before going anything beyond design.


To further aid in keeping this thread clean, if you have any questions on the legalities or what must be done to build a suppressor, go here and read http://www.silencertalk.com/forum/ Pay specific attention to the silencer smithing forum
LostIt is offline   Reply With Quote
Old 02-21-2009, 05:47 AM   #9 (permalink)
Registered User
 
Join Date: Oct 2000
Member # 2099
Location: Pearland Tx
Posts: 849
Quote:
Originally Posted by usmcdoc14 View Post
no just working on drawings and figuring. I can't do anything till my stamp gets back. I was wondering what to reinforce the blast chamber with, either stainless or Ti.

Do you have both materials on hand?
LostIt is offline   Reply With Quote
Old 02-21-2009, 03:49 PM   #10 (permalink)
Mister Machinist
 
Gozuki's Avatar
 
Join Date: Jan 2001
Member # 3088
Location: West Coast, USA
Posts: 12,793
Quote:
Originally Posted by usmcdoc14 View Post
how well does titanium hold up to erosion?
Good to extremely good. There are hundreds of Ti alloys used nowadays.
__________________
Quote:
Originally Posted by TireFryerSS View Post
you must be a muslim synthesizer!!
Gozuki is offline   Reply With Quote
Old 02-21-2009, 04:07 PM   #11 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
Quote:
Originally Posted by LostIt View Post
Do you have both materials on hand?
nope

Quote:
Originally Posted by Gozuki View Post
Good to extremely good. There are hundreds of Ti alloys used nowadays.
I think I may go stainless as my ability to machine Ti is.....unknown
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.
usmcdoc14 is offline   Reply With Quote
Old 02-21-2009, 04:22 PM   #12 (permalink)
Mister Machinist
 
Gozuki's Avatar
 
Join Date: Jan 2001
Member # 3088
Location: West Coast, USA
Posts: 12,793
Mine is. I have some grade 5 and 11 on hand...
__________________
Quote:
Originally Posted by TireFryerSS View Post
you must be a muslim synthesizer!!
Gozuki is offline   Reply With Quote
Old 02-21-2009, 04:39 PM   #13 (permalink)
I build stuff
 
aloharover's Avatar
 
Join Date: Oct 2002
Member # 14561
Location: Just outside the evac zone
Posts: 16,745
I am using stainless machinable 303 I believe
__________________

Want to know how I lost 45lbs? Try INSANITY®.
www.beachbodycoach.com/petermhope

"I wake up in the morning and piss excellence"

Colorado Springs, CO Based FFL-07/SOT
aloharover is offline   Reply With Quote
Old 02-21-2009, 05:59 PM   #14 (permalink)
Mister Machinist
 
Gozuki's Avatar
 
Join Date: Jan 2001
Member # 3088
Location: West Coast, USA
Posts: 12,793
303 is easily machinible, but usually unweldable.
__________________
Quote:
Originally Posted by TireFryerSS View Post
you must be a muslim synthesizer!!
Gozuki is offline   Reply With Quote
Old 02-21-2009, 06:12 PM   #15 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
Quote:
Originally Posted by Gozuki View Post
Mine is. I have some grade 5 and 11 on hand...
how hard is it to machine? basically I would sleeve the ENTIRE bore with tube and the first chamber.
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.
usmcdoc14 is offline   Reply With Quote
Old 02-21-2009, 06:16 PM   #16 (permalink)
Registered User
 
Join Date: Oct 2000
Member # 2099
Location: Pearland Tx
Posts: 849
Quote:
Originally Posted by usmcdoc14 View Post
nope



I think I may go stainless as my ability to machine Ti is.....unknown


We use alot of stainless tubing at work, and always have scrap, so I may be able to get you some, depending on what OD and thickness you need
LostIt is offline   Reply With Quote
Old 02-21-2009, 06:18 PM   #17 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
Quote:
Originally Posted by ItsaCJ6 View Post
Some how that looks suspiciously like an autoclave part.


I will make it from scratch. hold while I merge some posts to this thread.
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.
usmcdoc14 is offline   Reply With Quote
Old 02-21-2009, 06:23 PM   #18 (permalink)
Mister Machinist
 
Gozuki's Avatar
 
Join Date: Jan 2001
Member # 3088
Location: West Coast, USA
Posts: 12,793
Ti is not diffifcult to machine. It's not as abrasive as the high nickel super-alloys, but it's definately tougher than 316-303. Go easy any make sure you have good coolant flow.
__________________
Quote:
Originally Posted by TireFryerSS View Post
you must be a muslim synthesizer!!
Gozuki is offline   Reply With Quote
Old 02-21-2009, 06:26 PM   #19 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
Quote:
Originally Posted by Gozuki View Post
Ti is not diffifcult to machine. It's not as abrasive as the high nickel super-alloys, but it's definately tougher than 316-303. Go easy any make sure you have good coolant flow.
I have no coolant on my work bridgeport
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.
usmcdoc14 is offline   Reply With Quote
Old 02-21-2009, 07:39 PM   #20 (permalink)
I build stuff
 
aloharover's Avatar
 
Join Date: Oct 2002
Member # 14561
Location: Just outside the evac zone
Posts: 16,745
Quote:
Originally Posted by Gozuki View Post
303 is easily machinible, but usually unweldable.
Luckily i all held together with threads and the like.

The blast chamber is going to be a press to fit in the first baffle cavity.
__________________

Want to know how I lost 45lbs? Try INSANITY®.
www.beachbodycoach.com/petermhope

"I wake up in the morning and piss excellence"

Colorado Springs, CO Based FFL-07/SOT
aloharover is offline   Reply With Quote
Old 02-28-2009, 11:55 AM   #21 (permalink)
Fistful of Boomstick
 
usmcdoc14's Avatar
 
Join Date: Aug 2002
Member # 13344
Location: Virginia
Posts: 13,563
Send a message via AIM to usmcdoc14 Send a message via Yahoo to usmcdoc14
I ordered the stainless, I have an idea

Its going to be like the above baffle but the aluminum will be used to "hold" the stainless baffle sleeves. The aluminum will be in the middle and the sleeves will stick out and contact the inside of the tube.
__________________
Doc-14 Tactical Products:
When it absolutely, positively needs to be made from random crap found in the back of my garage.


You cant ban knowledge, learn to make your own guns right Here.
New York, Colorado, Maryland, Conneticut….is your state next? Yes it is. Write, Vote and Fight.
usmcdoc14 is offline   Reply With Quote
Old 03-01-2009, 03:22 PM   #22 (permalink)
Registered User
 
NEWMANS OWN's Avatar
 
Join Date: Nov 2003
Member # 24650
Posts: 1,187
only thing I can add to this thread. hope the pic helps
Attached Images
 
NEWMANS OWN is offline   Reply With Quote
Old 03-01-2009, 03:23 PM   #23 (permalink)
Registered User
 
NEWMANS OWN's Avatar
 
Join Date: Nov 2003
Member # 24650
Posts: 1,187
1.HTG Eureka 5.56mm
2. HTG Aris 5.56mm
3. HTG Universal .22 cal
4. KAC SR25 7.62mm
5. KAC Navy 9mm
6. Gemtech M4-96D 5.56mm
7. Costal ???
8. SWR Wolverine 5.56mm
9. AAC Scar SD 5.56mm
10. SRT Hurricane 5.56mm
11. Gemtech M4-96C 5.56mm
12. AAC M4-2000 5.56mm or M4-1000 ,M4-2000 07'models???
13. KAC NT4 5.65mm
14. Gemtech Trinity LID 9mm
15. AAC Evo 9 9mm
16. Gemtech Raptor 3LUG 9mm
17. Brugger &Thomet 9mm
NEWMANS OWN is offline   Reply With Quote
Old 04-08-2009, 11:38 AM   #24 (permalink)
I build stuff
 
aloharover's Avatar
 
Join Date: Oct 2002
Member # 14561
Location: Just outside the evac zone
Posts: 16,745
Can Designs

So right off the bat lets start of by saying that you need an approved Form1 or a valid current SOT.


Working on my first .22lr design and I have it so both end caps will unscrew from the tube.
I want to place a groove in each cap inside of the threads. idea is to place an o-ring here to help prevent crud from getting to the threads and make future disassembly easier.

What type of material does the oring need to be made of?
__________________

Want to know how I lost 45lbs? Try INSANITY®.
www.beachbodycoach.com/petermhope

"I wake up in the morning and piss excellence"

Colorado Springs, CO Based FFL-07/SOT
aloharover is offline   Reply With Quote
Old 04-08-2009, 11:52 AM   #25 (permalink)
Registered User
 
Join Date: Mar 2005
Member # 44662
Location: In a house!
Posts: 4,054
delrin?
__________________
"I'm strangely comfortable with it."
PONY_DRIVER is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 02:54 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.