Making a QA/QD Muzzle Brake

L1A1Rocker

Active Member
Getting that spacing exactly right between the two sets so they bear evenly had to be a nightmare.

Not really. The lead screw on the lathe takes care of that. The only real problem is figuring the engagement point on the threading dial because it is not factory marked. Once that's done it's all gravy. I tell ya. The best resource book so far has been the operation manual from the factory. It is full of great information that tells you most everything you need to know. BUT, the writers assume that you read at a rather high level. (nope, no forth grade reading level here) It also amazes me the number of people trying to run a lathe without a single resource book!
 

Brad

Benevolent Overlord and site owner
Staff member
Oops, I better get a book!
I will say that YouTube has been a great learning tool for me, seeing is a better way for me to learn at times.
The thread dial does lots of the heavy lifting Ian. It is all a matter of knowing what you see and what it means.
 

smokeywolf

Well-Known Member
Again, thank you for your kind words. Say, when you move back stateside - the Texas Hill Country is really nice. . . LOL

L1A1Rocker, I'm way too ornery to hand out props where they're not deserved. I've seen some great machinists and I've seen some butchers. My estimation of a a machinist manifests itself by whether I would loan him tools which are near and dear to me.
Let me know if you need anything.

If your spindle nose is threaded, there is certainly a risk in running backwards or moreover, suddenly reversing spindle direction (YIKES!). But, the only time I've had one unscrew on me is when machining up to a shoulder and suddenly throwing the motor or spindle in reverse. If memory serves, that was on a 1950s vintage Hardinge second operation toolroom lathe.
One of the reasons why most lathes now come with cam-lock spindle noses.

Once I even made a handle for my mothers antique icecream scooper

While at MGM, I made custom bathroom fixtures for Patrick Duffy, car parts for Ken Kercheval's '32 Ford and I think a '32 Packard, did some sheet metal work for William Devane and worked with the weld shop and plating & polishing shop to restore a chandelier for Gene Kelly.
In the Studio Metal Shops back in the '80s, G-jobs for actors and studio brass provided full time employment for at least one man and sometimes two.

Mrs. smokeywolf has been wanting a new brass handle for the kitchen faucet.

Say, when you move back stateside - the Texas Hill Country is really nice

Looked into moving into the Texas Hill Country. Even asked Ian about the situation with the aquifer that provides your water and the additional strain put on the aquifer and other local resources by people from Kali moving in there. Texas has a draw that is hard to resist, but Rick and Winelover's State and area has the schools and school programs that our kids need. Their academic needs also now have us stalled in our move for another 6 months.
 

fiver

Well-Known Member
okay I see,, said the guy that actually looked at all the pictures this time.:confused:
I missed the part about the internal threads.
and thought the brake actually turned into a threaded piece [that was threaded on the barrel] and was held in place by a dual threaded jam nut to back it all up.:oops:
 

Ian

Notorious member
Man, I'd been hanging on to an old 220V, 23K btu unit for about a decade and just gave it away to get rid of it about a month ago. It worked fine but was old, ugly, and by today's standards inefficient. What (generally) quit? Fan, compressor, thermostat?

That muzzle thingy looks really good. I have a question about the support ring: Are you going to drill a whole bunch of vent holes in it, or is the blast chamber just going to depressurize back through the muzzle device?
 

L1A1Rocker

Active Member
Man, I'd been hanging on to an old 220V, 23K btu unit for about a decade and just gave it away to get rid of it about a month ago. It worked fine but was old, ugly, and by today's standards inefficient. What (generally) quit? Fan, compressor, thermostat?

That muzzle thingy looks really good. I have a question about the support ring: Are you going to drill a whole bunch of vent holes in it, or is the blast chamber just going to depressurize back through the muzzle device?
Darn my luck! If the lucky recipient of your fine generosity is not using it yet. . . . lol

It made a very loud noise like the compressor was engaging - but much louder than normal, and kept making that noise for about 3 seconds. Then the noise stopped and the fan ran, but at a low speed. I shut it off for a while and then turned it on to fan. The fan did not come on and I could hear a loud hum.

Regarding the muzzle. No holes in the ring. I'm keeping a separate blast chamber. With this design the muzzle brake will work as the first two baffles and take the brunt of the blast. The muzzle brake is considered a sacrificial peace as it can be replaced easily, and without any BS from the ATF.
 

L1A1Rocker

Active Member
I'm sorry guys. It just dawned on my that I posted this update in the wrong thread. This was supposed to be posted in my silencer thread. :oops:
 

L1A1Rocker

Active Member
Hummm, what happened to the edit button? I'd like to copy the post and put it in the correct thread but the edit button seems gone. I'm I just not seeing it?
 

Ian

Notorious member
There's an explanation in the Announcements section, staff pulled the feature pending some upgrades.