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Posted: 1/19/2021 3:53:29 AM EDT
[#1]
Damn, not even a consistent finish. At that price, it should come with a coupon book for blowjobs.
I have a demilled receiver that I'll build on an 80% one of these days. |
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Posted: 1/19/2021 3:55:59 AM EDT
[#2]
Aren't those rewelds unreliable and prone to failure? Welded aluminum isnt very strong.
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Posted: 1/19/2021 3:58:32 AM EDT
[#3]
Wow!!
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Posted: 1/19/2021 4:02:11 AM EDT
[#4]
But will it get you laid?
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Posted: 1/19/2021 4:03:58 AM EDT
[#5]
Quote HistoryQuoted: Aren't those rewelds unreliable and prone to failure? Welded aluminum isnt very strong. I wouldn't parachute into Fallujah with one, but for hobby purposes it's fine. The mag well doesn't need to be very strong. |
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Posted: 1/19/2021 4:18:40 AM EDT
[#6]
Quote HistoryQuoted: Aren't those rewelds unreliable and prone to failure? Welded aluminum isnt very strong. Your ignorance in the topic of aluminum welding processes is staggering. Seriously. |
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Posted: 1/19/2021 4:43:05 AM EDT
[#7]
Quote HistoryQuoted: Your ignorance in the topic of aluminum welding processes is staggering. Seriously. There was a gentleman back in the day whos rewelds were so good you had to get them x-ray to find out it wasn't original. And these were transferable machine guns. |
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Posted: 1/19/2021 5:41:06 AM EDT
[#8]
Quote HistoryQuoted: Your ignorance in the topic of aluminum welding processes is staggering. Seriously. Isn't 7XXX aluminum not very weldable ? My understanding is that it is prone to stress cracking after the weld. |
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Posted: 1/19/2021 5:48:59 AM EDT
[#9]
Machine gun lower?
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Posted: 1/19/2021 6:00:53 AM EDT
[#10]
Quote HistoryQuoted: Machine gun lower? Semi only. |
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Posted: 1/19/2021 6:03:40 AM EDT
[#11]
Quote HistoryQuoted: Isn't 7XXX aluminum not very weldable ? My understanding is that it is prone to stress cracking after the weld. |
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Posted: 1/19/2021 6:04:28 AM EDT
[#12]
Quote HistoryQuoted: Aren't those rewelds unreliable and prone to failure? Welded aluminum isnt very strong. That depends on who welded it...... |
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Posted: 1/19/2021 7:09:07 AM EDT
[#13]
I was certified welder for years (mil std 1595A) and 7075 is not weldable alloy, sure you can weld it together and make it look good but its not.
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Posted: 1/19/2021 7:13:01 AM EDT
[#14]
Was the gunbroker auctioned one a Braceman reweld?
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Posted: 1/19/2021 7:37:08 AM EDT
[#15]
Quote HistoryQuoted: Your ignorance in the topic of aluminum welding processes is staggering. Seriously. This |
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Posted: 1/19/2021 7:39:33 AM EDT
[#16]
Quote HistoryQuoted: Was the gunbroker auctioned one a Braceman reweld? |
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Posted: 1/19/2021 7:39:57 AM EDT
[#17]
Quote HistoryQuoted: I was certified welder for years (mil std 1595A) and 7075 is not weldable alloy, sure you can weld it together and make it look good but its not. |
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Posted: 1/19/2021 7:41:05 AM EDT
[#18]
Whomever bought that must hate money. |
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Posted: 1/19/2021 7:41:36 AM EDT
[#19]
Quote HistoryQuoted: Aren't those rewelds unreliable and prone to failure? Welded aluminum isnt very strong. Depends if the welder knows what he is doing or not. |
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Posted: 1/19/2021 7:49:36 AM EDT
[#20]
Quote HistoryQuoted: I was certified welder for years (mil std 1595A) and 7075 is not weldable alloy, sure you can weld it together and make it look good but its not. I’m an uncertified hack with a welder, although I did go to welding school, and this is correct. You can stick it together with enough filler rod, and I’ve done that with some receivers, but understand that there is a difference between that and actually welding the metal together in a sustainable weld. If used in a non-cosmetic way it will eventually break. https://www.thefabricator.com/thewelder/article/aluminumwelding/aluminum-workshop-why-isn-t-7075-weldable- |
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Posted: 1/19/2021 7:53:36 AM EDT
[#21]
Quote HistoryQuoted: This. There was a gentleman back in the day whose rewelds were so good you had to get them x-ray to find out it wasn't original. And these were transferable machine guns. John Norrell is the guy you speak of! |
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Posted: 1/19/2021 7:56:51 AM EDT
[#22]
Quote HistoryQuoted: This. There was a gentleman back in the day whos rewelds were so good you had to get them x-ray to find out it wasn't original. And these were transferable machine guns. John Norrell His Ruger 10/22 FA trigger packs were awesome, too. |
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Posted: 1/19/2021 8:43:35 AM EDT
[#23]
Quote HistoryQuoted: I’m an uncertified hack with a welder, although I did go to welding school, and this is correct. You can stick it together with enough filler rod, and I’ve done that with some receivers, but understand that there is a difference between that and actually welding the metal together in a sustainable weld. If used in a non-cosmetic way it will eventually break. https://www.thefabricator.com/thewelder/article/aluminumwelding/aluminum-workshop-why-isn-t-7075-weldable- Quote HistoryQuoted: Quoted: I was certified welder for years (mil std 1595A) and 7075 is not weldable alloy, sure you can weld it together and make it look good but its not. I’m an uncertified hack with a welder, although I did go to welding school, and this is correct. You can stick it together with enough filler rod, and I’ve done that with some receivers, but understand that there is a difference between that and actually welding the metal together in a sustainable weld. If used in a non-cosmetic way it will eventually break. https://www.thefabricator.com/thewelder/article/aluminumwelding/aluminum-workshop-why-isn-t-7075-weldable- Ohsnap.gif |
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Posted: 1/19/2021 8:45:47 AM EDT
[#24]
Quote HistoryQuoted: Ohsnap.gif  |
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Posted: 1/19/2021 8:48:26 AM EDT
[#25]
Quote HistoryQuoted: Your ignorance in the topic of aluminum welding processes is staggering. Seriously. Lol my first thoughts as well. |
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Posted: 1/19/2021 8:51:34 AM EDT
[#26]
Typically the filler rod is a good bit weaker than the base material and somehow the entire heat affected zone becomes even weaker after welding. I assume it changes the metal's temper. At least that's the way it works with 6061. At work we are only using 17ksi for welded AL frames. The base metal allowable is 30ksi for reference.
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Posted: 1/19/2021 8:53:06 AM EDT
[#27]
Quote HistoryQuoted: Your ignorance in the topic of aluminum welding processes is staggering. Seriously. No kidding. |
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Posted: 1/19/2021 8:54:15 AM EDT
[#28]
It is not even a functional receiver
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Posted: 1/19/2021 8:57:14 AM EDT
[#29]
Makes me wanna sell mine, but replacing it though...
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Posted: 1/19/2021 8:59:39 AM EDT
[#30]
Quote HistoryQuoted: Then I guess all those transferable machine guns that are rewelds and shot thousands of rounds through are alllllll junk then. Honestly, if they were made from 7075 then yeah it’s possible that some day they break. 7000 series is widely regarded in the industry (welding and fab, not gun industry) as being “not weldable”. Absolutely no person who knows what they are doing would chose it for a welded component. Now can you actually physically weld it, yes absolutely. You wouldn’t even know the difference during or after welding. The problem is when the weld sees a load it can (and likely will) develop stress corrosion cracking and eventually fail. This doesnt happen the first time the weld is stressed, it takes time. To the point of machine gun receivers: is the stress put on them by firing the gun enough to induce SCC and eventually failure? I have no clue, but it doesn’t seem like it. |
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