Search found 1852 matches

by T-Rex
Thu Jul 09, 2020 8:29 am
Forum: Silencersmithing Forum
Topic: .308, 18" barel uncorking pressure,
Replies: 2
Views: 96

Re: .308, 18" barel uncorking pressure,

Your numbers are a bit off, but not terribly. Barrel length needs to have the "chamber" subtracted. Use cartridge overall length, minus bullet length, and subtract this from barrel length. Use that as bore volume. Use QL's "Useable Case Capacity" as your constant for pMax (62kpsi) volume. Also, your...
by T-Rex
Thu Jul 09, 2020 8:19 am
Forum: Silencersmithing Forum
Topic: on form 1: 7.62 or 30 cal
Replies: 6
Views: 183

Re: on form 1: 7.62 or 30 cal

30cal
by T-Rex
Thu Jul 09, 2020 8:16 am
Forum: Silencersmithing Forum
Topic: Advice plz: 5.56 end cap hole size, engraving location
Replies: 7
Views: 127

Re: Advice plz: 5.56 end cap hole size, engraving location

A Chinese, Aluminum, monocore is a horrible choice, horrible. Regardless of your first go'round, don't do it. Exit bore relies on design, but stay >.080in over caliber. You can engrave whatever you want. Some do endcap, some the mount, most do the tube. Placement on tube near midle or closer to moun...
by T-Rex
Wed Jul 01, 2020 2:42 pm
Forum: Silencersmithing Forum
Topic: Form 1 maker
Replies: 1
Views: 86

Re: Form 1 maker

No
by T-Rex
Tue Jun 23, 2020 7:26 am
Forum: Silencersmithing Forum
Topic: Welding endcaps
Replies: 9
Views: 326

Re: Welding endcaps

You don't usually bevel thin walled tube, it's just butt welded. But, stick welding w/ an oversized rod, a bevel on both pieces (#3) should do. You can turn afterwards, to remove the buildup.
by T-Rex
Mon Jun 22, 2020 7:44 am
Forum: Silencersmithing Forum
Topic: What Is Maximum PSI In .22 Rimfire Can?
Replies: 5
Views: 219

Re: What Is Maximum PSI In .22 Rimfire Can?

As Ecco pointed out, the volume of the system (chamber, barrel, suppressor) is exponentially greater than the chamber itself. Suppressors aren't sealed vessels and don't warrant the same engineering/design.
by T-Rex
Sat Jun 20, 2020 2:44 pm
Forum: Silencersmithing Forum
Topic: Form 1 Maker when is it officially made?
Replies: 10
Views: 361

Re: Form 1 Maker when is it officially made?

Well, sort of. Technically, it's a silencer as soon as you bore the end cap and assemble that onto the tube. But that doesn't mean it's illegal for the F1 maker to manufacture the rest of the parts. Exactly, a tube with a bored cap would meet the definition. I didn't say it would be illegal to make...
by T-Rex
Fri Jun 19, 2020 1:28 pm
Forum: Nutcase bitch and whine forum
Topic: What we should do about the riots
Replies: 18
Views: 583

Re: What we should do about the riots

If we bring our guns out, not to shoot looters, not to kill cops, but as a show of force in the defense of liberty, if we behave as strong, free, dignified men, gently and empathetically but with terrible power held in check by our own calm, the conversation will be FORCED to shift to something mor...
by T-Rex
Fri Jun 19, 2020 7:59 am
Forum: Silencersmithing Forum
Topic: Form 1 Maker when is it officially made?
Replies: 10
Views: 361

Re: Form 1 Maker when is it officially made?

I had a long reply for you, all typed out, and the site ate it. You get the amended version. What you're asking/thinking about would be illegal. It's a silencer when it meets the definition, not when you say so. A Form1 maker can legally repair their own silencer/property, regardless of original mak...
by T-Rex
Fri Jun 19, 2020 7:29 am
Forum: Silencersmithing Forum
Topic: Serial number on silencer
Replies: 15
Views: 486

Re: Serial number on silencer

While you can, you need to be careful not to damage the tube wall. A close fitting mandrel should be used.
by T-Rex
Tue Jun 16, 2020 7:27 am
Forum: Silencersmithing Forum
Topic: Form 1 design for an FN1900 in .32 ACP
Replies: 10
Views: 284

Re: Form 1 design for an FN1900 in .32 ACP

1.25x6 should be plenty
No need for any o-rings
I prefer not to space baffles near projectile diameter.
See how many cones you can get in a 6" tube @ ~.375in
by T-Rex
Sun Jun 14, 2020 2:47 pm
Forum: Silencersmithing Forum
Topic: Form 1 design for an FN1900 in .32 ACP
Replies: 10
Views: 284

Re: Form 1 design for an FN1900 in .32 ACP

A lot of your design features are ancient. Drop the perforated blast baffle. A single port is all that's needed. Ditch the mousehole (the cut at the cone's base). As said, blast spacer is huge. I'd probably put the first baffle 1/4" from muzzle. Personally, 'd just fill the volume with cones, but K'...
by T-Rex
Tue May 26, 2020 12:05 pm
Forum: Silencersmithing Forum
Topic: tons of junk coming from suppressor into pistol action
Replies: 8
Views: 231

Re: tons of junk coming from suppressor into pistol action

The spring in your gun, not the booster. The booster spring works in conjunction w/ the suppressor weight. The pistol's recoil spring will delay the action's unlock time.

I was interested in pics for, above all things, an idea of baffle geometry and their direct impact w/ back pressure.
by T-Rex
Tue May 26, 2020 9:23 am
Forum: Silencersmithing Forum
Topic: tons of junk coming from suppressor into pistol action
Replies: 8
Views: 231

Re: tons of junk coming from suppressor into pistol action

Post some pics of internals, so we can see what's going on inside.
Ammunition specs?
What pistols and spring weight?
by T-Rex
Sun May 24, 2020 9:44 am
Forum: Silencersmithing Forum
Topic: 9mm Suppressor (no tools)
Replies: 10
Views: 583

Re: 9mm Suppressor (no tools)

dirt43 wrote:
Sat May 23, 2020 9:49 pm
there are very limited resources online that I can find.
No offense, but you haven't looked very hard. There are entire forums dedicated to solvent trap and parts kit building. I even referenced one such site, just 2 posts down from yours.
by T-Rex
Fri May 22, 2020 8:18 am
Forum: Silencersmithing Forum
Topic: 5.5” - 6” Form 1 30 cal can ?
Replies: 4
Views: 362

Re: 5.5” - 6” Form 1 30 cal can ?

Some here might know the answer, but form1suppressor.boards.net is really tailored for the solvent trap builder.

What I do know, however, is that you should avoid Muted Machine.
by T-Rex
Thu May 21, 2020 3:58 pm
Forum: Silencersmithing Forum
Topic: Moving with a Form 1 suppressor
Replies: 10
Views: 417

Re: Moving with a Form 1 suppressor

This thread seemed to turn into a conspiracy theory, real quick. Just to clear things up: No one said there was a legal reqt. No one said Feds were showing up at your house. No one said a 5320.20 was req'd. And, yes, I have had authorities show up to my residence (at 9pm) because their records weren...
by T-Rex
Thu May 21, 2020 7:37 am
Forum: Silencersmithing Forum
Topic: Moving with a Form 1 suppressor
Replies: 10
Views: 417

Re: Moving with a Form 1 suppressor

I've had several instances where not keeping the registry up to date made a headache for me and took a bit of time to resolve. Simply sending a notification letter isn't difficult.

If you want to have that attitude, go ahead, no skin off my back. :/
by T-Rex
Tue May 19, 2020 9:46 am
Forum: Silencersmithing Forum
Topic: Moving with a Form 1 suppressor
Replies: 10
Views: 417

Re: Moving with a Form 1 suppressor

Stated right on your Form 1:

" The registrant shall notify the NFA ...in writing, of... any change to the address of the registrant." [snipped]
by T-Rex
Sun May 17, 2020 10:08 am
Forum: Silencersmithing Forum
Topic: 50BMG update thread
Replies: 12
Views: 532

Re: 50BMG update thread

Your design doesn't require a blast spacer, correct?
Regardless, I highly doubt you'll fire enough rounds through this suppressor to do detrimental damage to 1/8" thk steel. Especially since it's not seeing a direct blast front.
by T-Rex
Sun May 17, 2020 7:50 am
Forum: Silencersmithing Forum
Topic: 50BMG update thread
Replies: 12
Views: 532

Re: 50BMG update thread

IMHO, you've just negated the brake porting. The brake would have diffused the blast much better than those slits. What you've done is refocused the blast stream. If you were worried about gas eroding the tube interior, this would be more detrimental than the open brake. Get rid of that shield entir...
by T-Rex
Thu May 14, 2020 7:24 pm
Forum: Silencersmithing Forum
Topic: Order of operations for End cap help? *EDIT now finished with pics*
Replies: 10
Views: 574

Re: Order of operations for End cap help?

I'm making everything. But I don't have thread wires Do have a machinist handbook? Check what wire goes to the thread pitch and go to a music shop and buy piano wire in that size. Honestly, you should have a set of wires. They're dirt cheap and very useful. I'd make the tube first, threading both e...
by T-Rex
Thu May 14, 2020 6:07 pm
Forum: Silencersmithing Forum
Topic: Order of operations for End cap help? *EDIT now finished with pics*
Replies: 10
Views: 574

Re: Order of operations for End cap help?

Are you making the tube or buying? If making, I'd do it like this: (making end cap mount first) Part will be made as if chuck was tube (you'll be able to stick QD device into part properly) Profile and thread OD (using wires to confirm thread sizing) Bore interior to female thread Dmin Cut taper (as...
by T-Rex
Wed May 13, 2020 12:38 pm
Forum: Silencersmithing Forum
Topic: binary AR pistol .22 suppressor question
Replies: 3
Views: 353

Re: binary AR pistol .22 suppressor question

The binary trigger is pretty irrelevant, as it's just a bit under FA rated. And, it's still just 22lr.

There's a huge repository of completed builds (link in my sig)
Have a look in there and you might find a passed design you like.
by T-Rex
Tue May 12, 2020 4:55 pm
Forum: Silencersmithing Forum
Topic: 50BMG update thread
Replies: 12
Views: 532

Re: 50BMG update thread

Yes, sorry. ID was intended, instead of OD.

Still, pretty small. What's the overlap, of the 2 tubes?

You don't typically fill a 50BMG suppressor w/ baffles. Plug welding will eliminate need for spacers, saving weight.