Search found 394 matches

by cal50
Tue Jun 14, 2016 7:28 pm
Forum: Silencersmithing Forum
Topic: Difference in sound for different material?
Replies: 11
Views: 1327

Re: Difference in sound for different material?

Different material should have different harmonics everything being equal. Identical designs should meter the same peak sound pressure but the harmonic sound should be different (IMHO). Maybe its inaudible to humans and pisses off dogs and critters but I have fired similar designs in different mater...
by cal50
Thu May 05, 2016 9:38 pm
Forum: Silencersmithing Forum
Topic: Form 1 Ti 7.62 Suppressor
Replies: 2
Views: 5175

Re: Form 1 Ti 7.62 Suppressor

Thumbs up!
by cal50
Thu Mar 31, 2016 10:35 pm
Forum: Silencersmithing Forum
Topic: Synthetic & Natural Diamond Turning Tools and Inserts
Replies: 9
Views: 3531

Re: Synthetic & Natural Diamond Turning Tools and Inserts

We use to use a diamond tipped boring bar on glass filled Teflon parts. The diamond holds up well on abrasive materials.
Diamond and ceramic inserts do not like interrupted cuts / shock or impact loads unless technology has changed.
by cal50
Wed Mar 30, 2016 9:57 pm
Forum: Silencersmithing Forum
Topic: Single point threading titanium tube
Replies: 57
Views: 20994

Re: Single point threading titanium tube

I cut my threads in back gears ( low RPM ) and use a heavy cutting oil ( Ridged or Oatey from Lowe's or Home Depot). I use flip tip carbide and when I am getting near my final size I make two passes at the same depth to clean cut the threads. Stub up the tool and make your set up rigid as possible (...
by cal50
Sat Mar 26, 2016 2:38 pm
Forum: Silencersmithing Forum
Topic: 30 cal can - all you need to make one
Replies: 46
Views: 43763

Re: 30 cal can - all you need to make one

Well done sir~
by cal50
Thu Mar 03, 2016 6:06 pm
Forum: Silencersmithing Forum
Topic: Importance of Keeping Weight Low on a 300WM Suppressor
Replies: 2
Views: 2016

Re: Importance of Keeping Weight Low on a 300WM Suppressor

Suppressor weight has a varying affect on impact shift depending on barrel profile, rigidity, length, etc. One example is my AAC M4-2000 suppressor on different host rifles. Using the same mount my Remington 700 tactical shows a 1/2 moa impact shift @ 100 yards while the same suppressor on my Tavor ...
by cal50
Tue Mar 01, 2016 9:21 pm
Forum: Silencersmithing Forum
Topic: CVD Surface Treatments for Inhibition of Carbon Fouling of Steel Components
Replies: 2
Views: 1787

Re: CVD Surface Treatments for Inhibition of Carbon Fouling of Steel Components

The DOT 5 brake fluid / silicone oil looks like it does have a positive impact on ease of cleaning and I plan on giving it a try.
by cal50
Wed Feb 24, 2016 4:36 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Re: Form 1 / Omega baffle build .22 rifle can~

Cal50, please accept my admiration for your master work. Having seen master Tool & Die Makers starting as freshman over ½ century ago I especially appreciate a Sensei of Stainless. Oh to be able to turn my Atlas 618 into a CNC machine. :) :) Best The only two materials I personally dislike machinin...
by cal50
Tue Feb 23, 2016 8:51 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Re: Form 1 / Omega baffle build .22 rifle can~

Not much spare time to cut threads but have my host rifle ready to go..... S&W MP15-22 with some upgraded parts. I ditched the plastic quad factory rail and put an aluminum YHM quad rail on it its place. MI flip sights for BUIS while my Vortex SPARC II is on the way. Magpul "real" butt stock in plac...
by cal50
Mon Feb 15, 2016 9:36 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Re: Form 1 / Omega baffle build .22 rifle can~

(What changes help the Omega ???)

I have seen added side hole porting on a omega variation but nothing really solid report wise for metering numbers.
by cal50
Mon Feb 15, 2016 9:28 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Re: Form 1 / Omega baffle build .22 rifle can~

Would you be so kind as to post either some dimensional drawings or the 3D model that you fed into the CNC? https://grabcad.com/library/omega-baffle Did you use that file as it is on GrabCAD for your baffles? Or did you apply changes to it, with a few changes the difference in sound reduction is no...
by cal50
Mon Feb 15, 2016 8:29 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Re: Form 1 / Omega baffle build .22 rifle can~

mcrump wrote:
Would you be so kind as to post either some dimensional drawings or the 3D model that you fed into the CNC?


https://grabcad.com/library/omega-baffle
by cal50
Sun Feb 14, 2016 7:45 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Re: Form 1 / Omega baffle build .22 rifle can~

silencer_kid wrote:looks heavy. very nice.

The added weight is less noticeable on a rifle can.
Each baffle is slightly over 20 grams in weight so I will have to see what the total is once finished.
by cal50
Sun Feb 14, 2016 7:43 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Re: Form 1 / Omega baffle build .22 rifle can~

Capt. Link. wrote:Very nicely machined.I noticed the trough modification unique.Must post a field report when all complete.
Thx.
I cheated and used a CNC with 4th axis which saved me a LOT of hand cranking........
by cal50
Sun Feb 14, 2016 4:59 pm
Forum: Silencersmithing Forum
Topic: Form 1 / Omega baffle build .22 rifle can~
Replies: 17
Views: 3098

Form 1 / Omega baffle build .22 rifle can~

Got my approval for my latest project can. I wanted a high volume can for a .22 rimfire rifle ( M&P15-22 ) . My parameters were all titanium & stainless steel construction. I decided on a tube OAL length of 8.250" with threaded end caps. My tube is grade 9 titanium with grade 5 titanium end caps. In...
by cal50
Sat Feb 06, 2016 6:59 am
Forum: Silencersmithing Forum
Topic: Welding Ti Grade 5 and Grade 9
Replies: 3
Views: 1087

Re: Welding Ti Grade 5 and Grade 9

kbillet wrote:Anyone know a good source for TIG welding rod. Locally they want $88 a pound with a 5 lb. minimum. I realize the price is going to be in that range, but I don't need 5 lbs.

You can usually grab a few sticks cheap off flea Bay as filler rod or grade 5 round stock.
by cal50
Thu Feb 04, 2016 10:09 pm
Forum: Silencersmithing Forum
Topic: Silencer material comparison, weight vs strength
Replies: 28
Views: 8958

Re: Silencer material comparison, weight vs strength

Titanium at elevated temps is susceptible to oxygen/nitrogen contamination.
If you plan on running your can +600 F degrees I would choose another material.
by cal50
Tue Jan 12, 2016 7:17 pm
Forum: Silencersmithing Forum
Topic: New Ruger baffle
Replies: 18
Views: 2673

Re: New Ruger baffle

It could be worse, think Red Jacket......
by cal50
Wed Dec 23, 2015 5:00 pm
Forum: Silencersmithing Forum
Topic: Titanium booster and galling?
Replies: 6
Views: 832

Re: Titanium booster and galling?

The Nitronic series of stainless steel holds up well to galling and Nitronic 60 is some tuff stuff to machine but makes a very durable part. I had a bar end and turned a blast baffle & spacer from it. 17-4 is excellent material and heat treated I doubt it will ever fail or wear out but the weight re...
by cal50
Sun Dec 13, 2015 9:43 pm
Forum: Silencersmithing Forum
Topic: materials for baffles..need some feedback
Replies: 15
Views: 2363

Re: materials for baffles..need some feedback

304 is "gummy" and clings to cutting tools, carbide anyway.
The non-magnetic 300 series SS is great if you are making parts for food processing or rust free applications but 17-4 is the better pick for baffles IMHO.

17-4 is not that bad to machine with the right tooling.
by cal50
Sun Dec 13, 2015 8:54 pm
Forum: Silencersmithing Forum
Topic: full titanium 30 cal build in progress.
Replies: 28
Views: 5890

Re: full titanium 30 cal build in progress.

Thanks, the pic of that manifold helps. I'm not set up to back-purge yet, but that looks like a convenient way to do it. Its just a piece of brass with a drilled hole thru and some 1/4 NPT pipe threaded holed to fit the regulator to. I made a barbed fitting for some hose I attached to it and adjust...
by cal50
Sun Dec 13, 2015 6:05 am
Forum: Silencersmithing Forum
Topic: full titanium 30 cal build in progress.
Replies: 28
Views: 5890

Re: full titanium 30 cal build in progress.

I back purged my titanium tube by putting a hose flowing argon into the tube with a small opening on the other end so the argon can flow freely. Titanium welds up nicely. Cal, how did you set that up - did you tap in to the same line as the torch, or use a separate tank setup? You can do it anyway ...
by cal50
Fri Dec 11, 2015 11:47 pm
Forum: Silencersmithing Forum
Topic: full titanium 30 cal build in progress.
Replies: 28
Views: 5890

Re: full titanium 30 cal build in progress.

I'd like to give welding it a go but the damn tig rod is ridiculously expensive. I'm plenty sure of being capable just too cheap to buy filler metal. Nice looking work there! You can find some cheap on fleabay or buy grade 5 filler rod by the piece around $3. To me titanium welds like other alloys ...
by cal50
Fri Dec 11, 2015 8:34 pm
Forum: Silencersmithing Forum
Topic: full titanium 30 cal build in progress.
Replies: 28
Views: 5890

Re: full titanium 30 cal build in progress.

A cabinet purged with argon would be a great thing to have but as long as you can shield the heated titanium until it cools below 700F you can run a large gas lens and back purdge. As long as oxygen / nitrogen is kept shielded away from the hot titanium your welds should be fine. Argon gas keeps the...
by cal50
Fri Nov 27, 2015 4:37 pm
Forum: Silencersmithing Forum
Topic: Machining at it's finest.
Replies: 14
Views: 2261

Re: Machining at it's finest.

Looks like it passed the point of diminished returns but nails proof of concept.