13 replies to this topic

[2011Wrex]

I believe the threading is 0.765"-20 but it is a pain to figure it out. Can you machine a brake/flash hider/compensator of your choice to fit something like this? Details are at your discretion, I am just wondering you have the ability and willingness to make me a muzzle device.

I called and confirmed with Alexander Arms and it is 49/64-20RH which is .765 so... that's the thread pitch.

[Apollyon12]

What are the laws concerning stuff like this.

I though that someone can make a silencer, or modify a gun to have an integrated silencer, ONLY if they have the tax stamp for said silencer. I am not sure what kind of gunsmithing licences would be required if you were going to sell it. I would be leary of doing anything without knowing the laws myself.

[Nate]

I may have some experience with making a muzzle device.... Haha.



But be for warned that making a one off custom device might get expensive. When I spend a full day designing and machining a brake for myself, my time cost me nothing.... But I can look into it.

The use of a crush washer, and possibly peel washers will probably be needed with having to clock the brake.

Also there is no way I would feel comfortable just making something for that without having the gun/ barrel in my hand.

[CoupedUpSubie]

Just curious, what type of file is needed if someone was to need something made? I have some experience with CAD programs and doing the drawings. I want to get into the CNC world at some point.

[Nate]

A brake isn't a silencer. It's for compensation of recoil ONLY. Laws state you may not fabricate anything that is designed to lower the decible levels of the gun.

Believe me.. This brake makes the gun louder. I double up ear protection when I take that rifle out.

[Nate]

CoupedUpSubie, on 28 September 2011 - 04:51 PM, said:

Just curious, what type of file is needed if someone was to need something made? I have some experience with CAD programs and doing the drawings. I want to get into the CNC world at some point.

That was drawn up on CAD... Then CNC machined.

[2011Wrex]

Well, its an Alexander Arms .50 Beowulf barrel, I guess if you gave me a price estimate I could ship it to you. An A2 style would be neat but if it would be cheaper to use previous designs then I am all for it. Price isn't a huge concern as long as it is reasonable. I really don't like the looks of the AA spiral flash hiders and the other kind I have seen (don't recall what it looks like) needs the barrel machines to saturn specs. Anyways, I am very open to ideas.

[Apollyon12]

CoupedUpSubie, on 28 September 2011 - 04:51 PM, said:

Just curious, what type of file is needed if someone was to need something made? I have some experience with CAD programs and doing the drawings. I want to get into the CNC world at some point.

A machine shop only needs a fully dimensioned print to make parts for you. What they will use is a CAM (Computer Aided Machining) program such as MasterCAM for Solidworks, Pro-Engineer's machining package, or something like PartMaker. Or depending on the complexety, a setup machinist will program it long hand. The software needed, if one was going to purchase instead of pirating, is well over 10K for just the add-on alone (for the ones I mentioned), some are more than others, but in the end way out of the realm of a commen person.
So unfortunately, unless you are going to become a machinist and/or a CAM programmer, it's not really feasable. Knowledge of G code, CNC machines and setups is not something gained overnight. And that is why CNC time cost $100-$120 an hour.

For a machine shop, a small job like this just doesn't make any sense. For you or them. From the business side, the machine shop would be very willing to do a one off job for a customer that is placing a dozen orders a week and is bringing in thousands of dollars per order. You are a one time deal with no follow up work. It makes no sense to have a highly paid machinist do all the leg work without having the time paid for or more work down the road.
In the case of the part that Nate showed, conservatively I could program that for a one machine, one operation setup in one of our Y-axis lathes in about 2 hours. The setup would be in the range of 4-6 hrs for the first piece and I would guess the cycle time would be less than 30 min per piece. But I may run into trouble and take 8-16 hrs if things go badly in the setup. We do some large clevis parts that are in the same ball-park and at times it can take 1 or 2 days if the setup guy runs into trouble. So a one-off piece just doesn't make sense. The silve lining is that your part doesn't need to be made to really tight tolerances or super clean, blemish free surfaces. That is really where most of the trouble a machinist has day-to-day making parts.
I could do the same basic thing manually but you are looking at at least 16 hrs just to be safe (I would plan on having trouble and maybe doing a couple). Those same 16 hrs, I could be working overtime AND I might have to rent the machines from the company, because it's not a personal project but one I am selling.
That being said, I am sure there are other people out there willing to do something for you. Unless you want to make a 25-50 peice order, then I am definitly interested. Don't get me wrong, side projects like this are fun and I love to thing about them, but they are just not economicaly feasable.


Nate is also right in that you really should have the barrel in-hand. Unless you are taking to someone with previous experience making gun parts, and they say they can do it without the barrel, you might be better off finding someone else.

Edited by Apollyon12, 29 September 2011 - 05:40 AM.

[Apollyon12]

Is that a custom round or is it the same thing that the S&W five shot revolver shoots?

[Apollyon12]

Nate, on 28 September 2011 - 04:51 PM, said:

Believe me.. This brake makes the gun louder. I double up ear protection when I take that rifle out.

Did you shorten the barrel as well? That looks really short for a hunting rifle.

Edited by Apollyon12, 28 September 2011 - 07:25 PM.

[CoupedUpSubie]

Apollyon12, on 28 September 2011 - 07:14 PM, said:

A machine shop only needs a fully dimensioned print to make parts for you........

Wow, I completely understand the whole concept of the time involve in machining a piece due to taking a Machine Tool class where I have made plumb bobs, bolts and other items.

2011Wrex:
Now you could buy me a lathe and milling machine and I won't charge for labor.

Edited by CoupedUpSubie, 28 September 2011 - 09:42 PM.

[Apollyon12]

Sorry, but no school (be it trade school or HS tech) does more than scratch the surface of what actually goes on. I've worked with engineers who have 20 or 30 years experience that still don't get what things are possible and what information the machinist actually need. So you may think you have an understanding, but I am guessing 2011Wrex does not.

[2011Wrex]

Well I ask Nate because he had mentioned it previously when talking in the gun thread. .50 beowulf is a round designed to fire in an AR15 pattern rifle. Mine is a 16" barrel and will fire 3-400 grain projectiles in the 1800fps range.

[smelt240]

Nate, on 28 September 2011 - 04:47 PM, said:

I may have some experience with making a muzzle device.... Haha.



But be for warned that making a one off custom device might get expensive. When I spend a full day designing and machining a brake for myself, my time cost me nothing.... But I can look into it.

The use of a crush washer, and possibly peel washers will probably be needed with having to clock the brake.

Also there is no way I would feel comfortable just making something for that without having the gun/ barrel in my hand.

What is the possibility of having an orig cone style RPK flash hider made for an AK,that has been de-threaded? I haven't measured the barrel,but Im sure it would be a fairly easy lathe job. I could do the threading myself,just dont have the tools for turning such a piece. I bet you could get rid of a boatload of these,with all the wasrs floating around out there with no end-of-barrel goodies available. Id buy at least 3 if the price was decent.

Edited by smelt240, 11 February 2012 - 04:15 PM.