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Posted: 2/24/2011 4:54:54 PM EDT
[#1]
Quote deleted by moderator.
Ok, this thread has officially just gotten way to Happy for me.....not that there's anything wrong with that. I'm going over to GD where it is not so risque.. 
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Posted: 2/24/2011 6:17:00 PM EDT
[#2]
7 pages, really?
Thanks to the OP for sharing your work and pics. Thanks to ADCO for sharing your wealth of knowledge. I see ADCO as going above and beyond what many in this industry would have done. I have learned a great deal from them and appreciate their willingness to share what they have learned from years of experience. Full discloser: ADCO is my local dealer, and I consider myself very luck for that. |
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Posted: 2/24/2011 6:17:15 PM EDT
[#3]
I have issued a warning, and action is pending. Please stay on topic.
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Posted: 2/24/2011 6:23:52 PM EDT
[#4]
I locked him. i will deal with him tomorrow because of the hour. Thanks to Lancelot
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Posted: 2/24/2011 6:28:43 PM EDT
[#5]
Quoted:
Seriously, this thread has it all. Proud OP, testy poster, butt hurt OP, excelent machining info, some questionable math backed up by some serious math, an Oprahish apology from testy poster's co-worker, cars and Jay Leno. Have I missed anything?   Nope...that covers about all of it... |
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Posted: 2/25/2011 4:05:06 AM EDT
[#6]
Quoted: Quoted: Nope...that covers about all of it...Seriously, this thread has it all. Proud OP, testy poster, butt hurt OP, excelent machining info, some questionable math backed up by some serious math, an Oprahish apology from testy poster's co-worker, cars and Jay Leno. Have I missed anything? Except none of the math was actually questionable  |
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Posted: 2/25/2011 6:05:41 AM EDT
[#7]
Quoted:
Quoted:
I worked in a machine shop years ago, not as a machinist, but as a constuction contractor, and this article was posted in the shop.......great article...by Jay Leno http://www.kanabco.com/vms/callingallmachinists.html and this was a serious shop a division of one of the biggest Companies in the US.....read it.... Great Article, I love Jay Leno, I'm actually a big time Car/motorcycle guy. I'm just about to finish up a fully custom Yukon, shaved door handles, one off interior, two tone paint and I'm in the process of assembling a custom 6.0L w/ a supercharger to drop in and replace the 5.3 all done by me personally over the course of the last yr or so. Wiring, upholstery, painting etc. The Machinest guys might like this... http://i373.photobucket.com/albums/oo180/CopperAndBlack/22728449.jpg http://i373.photobucket.com/albums/oo180/CopperAndBlack/355ab9df.jpg The truck it goes in... http://i373.photobucket.com/albums/oo180/CopperAndBlack/1-3.jpg That is a beautiful looking Yukon Glad it wasn't a two door....I might have gotten all misty...or bitten my knuckles If you guys put that much attention to detail into rifle building....you could be on the verge of creating a dynasty. -cheers |
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Posted: 2/25/2011 6:16:57 AM EDT
[#8]
Quoted:
I worked in a machine shop years ago, not as a machinist, but as a constuction contractor, and this article was posted in the shop.......great article...by Jay Leno http://www.kanabco.com/vms/callingallmachinists.html and this was a serious shop a division of one of the biggest Companies in the US.....read it.... thanks for the article....it is spot on Here in WI we are trying to keep the neo Marxist socialist oriented feminazized teacher's union from helping to bankrupt our state...like they have our educational system... Leno nailed the education problem we face and the jobs problem we face to a tee... |
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Posted: 2/25/2011 7:28:35 AM EDT
[#9]
Speaking of good Machine Shops, anyone ever use ToolCraft in Marion, NC? http://www.toolcraftinc.com/ They do a ton of MIL stuff , from M4 parts to Aerospace stuff.
Last time I was in there they had 5 big CNC machines and 3 shifts in just one dedicated room (the place is huge) making nothing but M4 Bolt Carriers. It was an amazing sight, as each one was made they were put in stacks of custom Pelican cases with multiple levels of individual cutouts in the foam about 5 or 6 to each level. Still kick myself for not taking some pics, dang it. Anyway, besides all the big contract stuff they do they will also do small limited runs of specialized stuff for small guys like me, and at amazing prices and are nice people. Here is a small sample of the recent/current GOV stuff they make parts for.. Hill Air Force Base, UT - C130, C5 Galaxy, B1B Redstone Arsenal, AL - Hell Fire Weapons System Defense Supply Center of Columbus - Diesel Engine, Grenade Launcher, HMMWV, M203, Tank Truck FN Manufacturing - M24 Kidde Aerospace - Airbus Curtiss-Wright Flight Systems - F15, F16, F22, B777, F18, V-22, 787 Rock Island Arsenal - M16, M249, M145, M240, M95, M119A1 Howitzer, 105mm Tank |
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Posted: 2/25/2011 10:25:20 AM EDT
[#10]
Quoted:
I locked him. i will deal with him tomorrow because of the hour. Thanks to Lancelot Wait....who got locked and what for? Did I miss something? |
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Posted: 2/25/2011 10:26:36 AM EDT
[#11]
Quoted:
Quoted:
Quoted:
Nope...that covers about all of it...Seriously, this thread has it all. Proud OP, testy poster, butt hurt OP, excelent machining info, some questionable math backed up by some serious math, an Oprahish apology from testy poster's co-worker, cars and Jay Leno. Have I missed anything? Except none of the math was actually questionable
Certainly not by me. I'm not smart enough to understand it, even after the work was shown 
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Posted: 2/25/2011 10:33:52 AM EDT
[#12]
Quoted: I'm not impressed with the level of engineering found in the rock, or it's ability to accelerate to 200 mph without being acted upon by some outside force.  God's a pretty good engineer... |
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Posted: 2/25/2011 10:42:29 AM EDT
[#13]
OP, great thread. Been following this but since I don't know crap about machinging metal I've kept my trap shut. With all the peanut gallery though I thought I'd chip in my $0.02.
Ditto to ADCO, good thread, very informative. Thank you both. |
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Posted: 2/25/2011 11:44:43 AM EDT
[#14]
Quoted: Quoted: Looking at the pictures, I don't see any baffles in that flash suppressor, Oh, wait, wut, OK now I remember, Flash hiders aren't supposed to have baffles....................... Looks like a pretty good job, better than I could do. And welcome to arfcom, the source of more info than wikipedia.  It is a suppressor mount. YOu win the FAIL of the day for this post. Really? I read this from the OP "wanted his stainless bull barrel threaded for a flash hider he already had" Please point me to the 'suppressor' as mentioned by the OP - I must have missed it in my haste to post before reading the entire thread. |
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Posted: 2/25/2011 11:54:34 AM EDT
[#15]
Quoted: Ahem*Quoted: Quoted: Looking at the pictures, I don't see any baffles in that flash suppressor, Oh, wait, wut, OK now I remember, Flash hiders aren't supposed to have baffles....................... Looks like a pretty good job, better than I could do. And welcome to arfcom, the source of more info than wikipedia. It is a suppressor mount. YOu win the FAIL of the day for this post. Really? I read this from the OP "wanted his stainless bull barrel threaded for a flash hider he already had" Please point me to the 'suppressor' as mentioned by the OP - I must have missed it in my haste to post before reading the entire thread. OP Pic:  AAC 18-tooth A2 M4-1000/M4-2000 Mod.6 suppressor mount:  Standard A2 Flash Hider:  That flash hider is a suppressor mount. Whether or not the customer plans to mount a suppressor is unclear, but since he spent the considerable extra money on a mount over a $8 A2 flash hider, odds are he would like to be able to use a suppressor on it... |
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Posted: 2/25/2011 12:13:39 PM EDT
[#16]
Quoted: Quoted: Ahem*Quoted: Quoted: Looking at the pictures, I don't see any baffles in that flash suppressor, Oh, wait, wut, OK now I remember, Flash hiders aren't supposed to have baffles....................... Looks like a pretty good job, better than I could do. And welcome to arfcom, the source of more info than wikipedia. It is a suppressor mount. YOu win the FAIL of the day for this post. Really? I read this from the OP "wanted his stainless bull barrel threaded for a flash hider he already had" Please point me to the 'suppressor' as mentioned by the OP - I must have missed it in my haste to post before reading the entire thread. OP Pic: http://i373.photobucket.com/albums/oo180/CopperAndBlack/BullBarrelThreading14.jpg AAC 18-tooth A2 M4-1000/M4-2000 Mod.6 suppressor mount: http://img.photobucket.com/albums/v206/Trenchknife/aacmount.jpg Standard A2 Flash Hider: http://www.pkfirearms.com/product_images/0000/5929/Extended_A2.jpg That flash hider is a suppressor mount. Whether or not the customer plans to mount a suppressor is unclear, but since he spent the considerable extra money on a mount over a $8 A2 flash hider, odds are he would like to be able to use a suppressor on it... OK. I was simply going by the written word, as stated by the OP, and not attempting to interpret what is unclear......... This is a technical section, not GD. Your point is well taken, though. Thanks for identifying this suppressor mount. |
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Posted: 2/25/2011 12:46:05 PM EDT
[#17]
There is a burr or folded bit of metal near the base of the threads that extends out onto the face of the muzzle. |
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Posted: 2/26/2011 8:36:49 AM EDT
[#18]
Quoted:
Quoted:
Quoted:
Quoted:
I understand how the OP got a little testy. There are machinists, and there are machinists that build stuff that spins at 38,000RPM, where an imbalance equal to that of a postage stamp destroys a 5 million dollar engine, and a bad job not only ends up in a ruined career, but dead people as well. Aerospace machinists are in the latter group. A 5.56 projectile at 3000fps out of a 1/7 barrel is spinning about 309000 rpm Math is not your strong point is it? 3000FPS x 60sec/min x 12in/ft = 2,160,000 inches/minute With a 1/7 twist barrel that's one full revolution every seven inches. So 2,160,000/7 = 308,571 RPM I'm pretty darn good at math actually. How else do you get a mechanical engineering degree? (ETA: you wasted post 223 on being wrong...) my humor attempt=fail fa·ce·tious –adjective 1. not meant to be taken seriously or literally: a facetious remark. 2. amusing; humorous. 3. lacking serious intent; concerned with something nonessential, amusing, or frivolous: a facetious person. |
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Posted: 2/26/2011 10:11:51 AM EDT
[#19]
***
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Posted: 3/1/2011 5:09:39 PM EDT
[#20]
Im really late but...
cant you just use a live center to make it concentric then cut back into the muzzle with crowning tool to fix the crown? I too would have removed the barrel. |
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Posted: 3/1/2011 6:40:33 PM EDT
[#21]
Quoted: AAC 18-tooth A2 M4-1000/M4-2000 Mod.6 suppressor mount: http://img.photobucket.com/albums/v206/Trenchknife/aacmount.jpg Standard A2 Flash Hider: http://www.pkfirearms.com/product_images/0000/5929/Extended_A2.jpg That flash hider is a suppressor mount. Whether or not the customer plans to mount a suppressor is unclear, but since he spent the considerable extra money on a mount over a $8 A2 flash hider, odds are he would like to be able to use a suppressor on it... This is speculation. For all we know, he could have found this "aggressive" looking FH at a gun show for $5 and liked the looks, been given it by a friend, or had it lying around in his parts box from some trading he's done in the past. As the op stated: "wanted his stainless bull barrel threaded for a flash hider he already had" There is no mention of how he came to own this unit, nor of him him purchasing this for a suppressor, or any other "special" treatment. Not to say that he didn't, but you are injecting speculation into this situation which has has no supporting information. |
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Posted: 3/1/2011 8:22:04 PM EDT
[#22]
Quoted:
The main thing I learned for sure, is I probably shouldn't attempt this procedure using my 1948 South Bend Model 9 (B) 48" lathe...and even if it could, I certainly shouldn't :-) Are you kidding if I had a lathe I'd be threading everything I could find, pipes, broom sticks, toothbrushes. Why the hell not if you don't have someone to teach you (or more to the point me) how are you ever going to learn other than trying it and see how to improve for the next time. |
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Posted: 3/1/2011 8:24:27 PM EDT
[#23]
Quoted:
As a man with a little knowledge of aerospace superalloys, I can appreciate your experience in the machining of turbine parts . Hell, most on here don't know the difference between 4140 and 4150 let alone anything about Ni & Co based alloys (Rene, GTD, Inconel, Stellite, Mar M, PWA, nimonic, etc) that go in turbines. Good job on the barrel. It's all eutectic to me. |
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Posted: 3/1/2011 9:10:42 PM EDT
[#24]
Quoted:
Call me crazy, but I thought ADCO was trying to help the guy out. |
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Posted: 3/2/2011 3:48:35 AM EDT
[#25]
Quoted:
Quoted:
AAC 18-tooth A2 M4-1000/M4-2000 Mod.6 suppressor mount: http://img.photobucket.com/albums/v206/Trenchknife/aacmount.jpg Standard A2 Flash Hider: http://www.pkfirearms.com/product_images/0000/5929/Extended_A2.jpg That flash hider is a suppressor mount. Whether or not the customer plans to mount a suppressor is unclear, but since he spent the considerable extra money on a mount over a $8 A2 flash hider, odds are he would like to be able to use a suppressor on it... This is speculation. For all we know, he could have found this "aggressive" looking FH at a gun show for $5 and liked the looks, been given it by a friend, or had it lying around in his parts box from some trading he's done in the past. As the op stated: "wanted his stainless bull barrel threaded for a flash hider he already had" There is no mention of how he came to own this unit, nor of him him purchasing this for a suppressor, or any other "special" treatment. Not to say that he didn't, but you are injecting speculation into this situation which has has no supporting information. In concept you would be right but not probable. Do you know how much that FH costs? They're $99 retail and about $70 wholesale fopr a FH that is not very good and has an annoyong "tuning fork" sound when you shoot. They're not selling at gunshows for $5. Honestly, your scenarios amount to no more than speculation also. |
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Posted: 3/2/2011 3:53:24 AM EDT
[#26]
Quoted: There is no mention of how he came to own this unit, nor of him him purchasing this for a suppressor, or any other "special" treatment. Not to say that he didn't, but you are injecting speculation into this situation which has has no supporting information. Properly threading a barrel concentric and coaxial to the bore is not "Special Treatment" regardless of whether or not a suppressor will be attached. If it's not extremely eccentric, then he probably won't see any ill effects on accuracy, but would you want a machine shop taking shortcuts when threading your barrel, regardless of what you plan to mount? (I know the OP didn't take shortcuts, and we all understand what "concentric to bore" means now) |
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Posted: 3/2/2011 4:37:43 AM EDT
[#27]
Quoted: Honestly, your scenarios amount to no more than speculation also. Absolutely agreed. However, my completely unsupported speculation isn't an also an attack on the OP, unlike the speculation I refer to above. |
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Posted: 3/2/2011 4:42:53 AM EDT
[#28]
Quoted: Properly threading a barrel concentric and coaxial to the bore is not "Special Treatment" regardless of whether or not a suppressor will be attached. If it's not extremely eccentric, then he probably won't see any ill effects on accuracy, but would you want a machine shop taking shortcuts when threading your barrel, regardless of what you plan to mount? (I know the OP didn't take shortcuts, and we all understand what "concentric to bore" means now) Agreed. However, the reaction is OMGWTFBBQ that the threading was possibly done in a non-concentric manner. The fact of the matter is that if done for a flash suppressor, as the OP was informed, it won't really matter. It -may- matter if a suppressor is used, depending on the actual concentricity. My point, however, is that the OP was informed that the threading was for a flash suppressor, not a suppressor mount. Barring any additional information, anything else is speculative, and I think attacks on the OP based on speculation are unwarranted. That being said, I have every intention of sending ADCO a 16" barrel to be cut down / threaded, when the time comes. |
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Posted: 3/2/2011 5:08:46 AM EDT
[#29]
Quoted: Quoted: Honestly, your scenarios amount to no more than speculation also. Absolutely agreed. However, my completely unsupported speculation isn't an also an attack on the OP, unlike the speculation I refer to above. "Hey, that's not the right way to do that" is not an attack... (and it was true, it really wasn't the correct method to center a barrel for threading, suppressor or not. That is not speculation.) Then came bigbore's joke about trashing the thread, which didn't go over very well... When the OP came back with basically "I know what I'm doing, so shut up" then the real barrel professionals stepped in and put him in his place. bigbore may have been a bit harsh, but ADCO knows their stuff... Now everybody knows how it should be done and we're all getting along, except you seem to still be a bit sensitive over something that the OP has already gotten over... |
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Posted: 3/2/2011 5:23:20 AM EDT
[#30]
Quoted: "Hey, that's not the right way to do that" is not an attack... (and it was true, it really wasn't the correct method to center a barrel for threading, suppressor or not. That is not speculation.) Then came bigbore's joke about trashing the thread, which didn't go over very well... When the OP came back with basically "I know what I'm doing, so shut up" then the real barrel professionals stepped in and put him in his place. bigbore may have been a bit harsh, but ADCO knows their stuff... Now everybody knows how it should be done and we're all getting along, except you seem to still be a bit sensitive over something that the OP has already gotten over... Nah, I just call 'em how I see 'em. |
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Posted: 3/2/2011 1:25:36 PM EDT
[#31]
This thread reminds me i need to break down my bull brl upper and send it to Adco for threading
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