" FORGING IN CLOSED DIES " 1955 DROP FORGING ASSOCIATION PROMO FILM STEEL 99784
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- เผยแพร่เมื่อ 14 มิ.ย. 2020
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This color educational/training film is about forging. Copyright 1955, directed by Dermid Mclean and made by Paul Hance Productions.
Titles: Forging in Closed Dies (:07-:58) was made by the Drop Forging Association. In a log cabin, a man makes a horseshoe on an anvil. The man is forging which is to make or shape (a metal object) by heating it in a fire or furnace and beating or hammering it. Billets of steel are brought to forging heat in a furnace. A man uses a modern machine to forge. The machine beats down the metal (:59-2:43). A man hits hot metal on an anvil. A machine slams down on metal and it emits a huge fire. A woman gets into a car. They show a Studebaker car without it's side and roof. The cylinder block is shown. Fan blades. Gears move. Differential gears. A chassis. Parts of the car move, these parts needed forging originally. A connecting rod. The die in which the rod is made is shown. A forging drop hammer is where the rod will be made. Steel is heated in a furnace. The hammer drop down onto the molten piece (2:44-6:22). The finished connecting rod. The structure is shown. A forging drop hammer machine with a worker next to it. The machine is shown working as it drops. The hammer keeps drooping. The air lift type machine (6:23-8:34). A steam drop hammer machine is shown and explained. The men place metal inside of it. Steam assists. Steam hammer keep dropping. The hammerman uses different dies for forging a piece. Multiple dies are shown and what they do to the metal. What each side of the dies does is explained in detail. A connecting rod through various stages is shown (8:35-11:22). A forging machine or upsetter. Men work with the upsetter machine. Finished forging is shown. A wood model shows how a header works - a three cast die. Inserting a bar into the die cavity is shown with a wood piece and a model to explain. Grain structure is shown and explained. Another means of forging is a mechanical press. Men work with this machine. Press smashes metal down to a flat impression (11:23-15:02). A hydraulic press machine. Aluminum is being made for a jet engine and this machine helped assist. Metal is on fire in the machine. Forging roll machine. Partly finished forgings are being placed in the machine. Smith forging is used sometimes, this is shown and explained. A trip hammer. Hammer machine slams down (15:03-17:42). Die blocks. A die block being made and explained. A man outlines the die impression A machine cuts into the die. Completed forging dies are installed into the hammer machine. High grade steel is required. Chemical analysis, physical properties, microscopic analysis. Steel pieces are cut and sheared. Forging multiples. Tiny pieces of steel (17:43-20:18). A ton of steel is moved by a crane. Multiples from which forging is made. PIeces of finished steel. Automobile crankshaft forging. Crankshaft forging unit. They make the crankshaft in the machine. Fiery finishing blows to the metal (20:19-22:25). Finished crankshafts. Dental tools. Forceps start as a bar of alloy stainless steel. A man forges in a machine. A billet of special alloy steel is carried by a machine to a forging machine. The hammer slams down on the machine and smoke and flame shoot out (22:26-25:07). Modern turbojet engine. A block of steel is being moved to a forging machine to be smashed down to its proper form. The wheel forging is moved. Blades for the engine are being finished forged. The blades in a finished wheel. Men walk towards a military jet, a Grumman F9F Panther. The pilot gets into the plane. The plane flies through the air (25:08-27:37). End credits (27:38-27:49).
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Old documentaries are 100 % better than modern ones
By a HUGE margin.
By a Moon distance.
I feel the people who made documentaries in the old days had a genuine appreciation for the subject they were documenting where that is less often true today.
Spoken like a truly ignorant person…
100 %
Having been a stamper for over 30 years, iron smoshers as we were known, you would be surprised how skilful the job really is, from the setting of the dies to forging at the correct temperature, very very hard work, but i loved every minute of it.
how long does a set of dies last?
Students across the world should be so lucky to se these …. Real film. Real work. Real people. …….
No comment is perfect but this is close 👌
So much more interesting than today's rubbish! I imagine part of this work was financed by hearing aid manufacturers.
Watching the crankshaft forging made me think of a story my dad told me that happened probably 50 years ago. He worked for a major diesel engine manufacturer from the mid 1950's to the early 1990's. He was tasked to find out why crankshafts were failing and so he visited the machine shop where they were machined to final dimensions. His first clue that something was amiss was that periodically the whole building shook while taking rough cuts on the forgings. The cranks were machined to spec, but the loud noise of the rough cuts was a red flag. He visited the forging plant and discovered that the dies were badly worn, causing the forgings to be oversize. All that vibration on the rough cut was introducing cracks into machined parts.
Yeah, these dies must cost a fortune to replace..
God bless the hard-working generations before us. The modern world is something we take for granted.
Running a 2500 pound hammer at Crescent Tool for two years convinced me I needed to go to college.
@Whistling in The Wind : An adjustable wrench was often referred to as a *Crescent Spanner* in Australia during the 1950's.
And then went back to that-same company as a mechanical engineer, maybe? ☺
Amazing how education hard work can be.😯😉
hahaha big hammers get real rough real quick don't they hehe
And dav wasn't crescent a brand name like allen? Always thought it was anyway
My grandfather worked for a drop forging company in the US from the time he got off the boat from Sweden in 1903 until the day he retired, he was in charge of the surgical tool department
Immigrants always taking jobs!!!
@@bryannonya9769 THEY TEWK ER JERBS!
@@danorthsidemang3834
The jobs did not exist. Swedes created these industries from nothing. No welfare, no government benefits of any kind.
@@danorthsidemang3834 LOL so true!
@@bryannonya9769 Trolls taking oxygen real humans could use.
Everytime I watch these old videos I realize just how many of our jobs are lost because our politicians let so many companies move over seas. Our politicians have made themselves rich as the rest of us are jobless or service jobs.
100% we are losing a lot of skill sets in the West and giving them to “developing countries” there are still some niche industries around thou, but it won’t be long before they are gone.
They want us to be nothing more than consumers, not builders.
Equity for the Earth.
I’d wager that decisions to manufacture overseas are made in boardrooms guided by CFOs and shareholders more than politician weenies.
@@charlieromeo7663 the point is the political weenies make the policy that creates a situation where it's more profitable to move over seas. While you're right about the decisions being made in board rooms, it's the political policies that prompt those decisions.
the executives put a gun in their mouth and asked if they wanted to get paid or get buried
We are a long way past peak civilization already !
Real work. Real men.
working in real associations and earning real wages, but not anymore. the Shareholders demand more, more, more!
@@charlesballiet7074 "Trickle-down" my ass! You give corporations huge tax cuts, they don't share that profit with the workers. Never have. Never will.
U.S Forge 105 Clark St Detroit Michigan. "Through These Doors Work The Best Damn Forge Workers In The. World!!! 1978.
Worked for Alcoa Aluminum for 16 years. Forging 10,000 ton hydraulic presse was little hot during the summer time.
These films reminds me of my school days.
When you came in from recess and the film projector was set up! Bonus if the reel was a huge one! Today's kids will never understand 😂
Nice to have this topic digitally preserved from the 1950's. It's a very rare in-depth discussion of Drop Forging, which is not usually shown or narrated in such detail elsewhere on You Tube.
Present day discussions on You Tube seem to favour CNC carvings from a single billet of aluminium alloy, but according to this video, the grain structure wouldn't be as strong. Be interesting to compare foundry-casting grain structures to drop-forged grain structures. Well done Periscope Films!
cast is no where near as strong as forged.
Cast and then machined will Never never never meet the grain structure benefits of forged. Hence wrought iron bar stock is usually four to seven times more expensive than an ingot of cast iron.
If you ever go to the hardware store and get a bolt, you may notice the neck of the bolt is skinnier than the portion with threads. This is because they roll the b and blank between two concentric dies and form the thread and the material is upsetted. Thus they have a higher grade and are stronger.
@@joshschneider9766 I... what? It's because they're completely different materials. And do you even mean wrought iron, or modern mild steel?
The grain structure of forged items is... overstated. There's also some confusions given that grain can mean at least two entirely different things (both of which forging can impact in certain materials in different ways) when it comes to steel, and cast iron is effectively an entirely different ferrous alloy than any of the others. There's also ductile cast steel, nowadays. So you have grain as in the granular structure of the internal crystals, where size is primarily what matters (which can be increased [bad] by getting it too hot or for too long, or decreased [good] through forging to an extent but primarily by annealing and normalizing [types of heat treatment]); this is the type of grain that matters a lot, and it comes pre-treated from the steel mill.
And then you have grain as in a wood grain, a grain (mostly theoretical) running down the piece conforming to how it's been worked; given that all barstock is forged in its creation (really it's poured directly into a rolling mill, where it's forged) it already has a grain. The only time I've even heard of this being a problem is in mostly apocryphal stories about a person laying out a part very stupidly and subjecting it to multiple stressors and then blaming the failure on the grain going the wrong way. This is the type of thing that is being referred to by the "grain structure" of forged items conforming to their shape properly. In reality drop forged steel items could be made very strongly and with very complex shapes quite easily compared to anything else for a long time, reinforcing them while being somewhat lighter. There's a whole series of intertwining myths that have to do with this, which probably arose naturally as people tried to explain what metallurgists today know the reasons for.
Cast iron is weak due to its high carbon content (too high, making it brittle) and often quite large grain (crystalline structure) which allows for easy cracking. It's however not really comparable to other cast materials, or analagous to normal steel/ iron because it is materially different. It's all old terminology problems.
So we’ll said! And I’m so happy you pointed out how TH-cam videos now favor CNC work of billet aluminum. Nothing like forged steel
Tough people used to do this kind of work. Very tough people.
We still do this today in Texas for butt weld flanges
Metal is so beautiful...this film made my day!
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Old are always not gold they are diamonds 💯💯💯💯💯
That is one sexy cutaway of a whole car.
Ageless classic styling of Studebaker Hawk!
Sad that a lot of heavy industrial work like this has disappeared in America.
Wow, just wow. This video is a masterpiece jewel of metallurgy. I giggled in amazement, and the men working in these forges i consider their work as difficult and dangerous as soldiers in battle. But that hammer of God. 60 tons + steam pressure. I've actually been in a car factory with a smaller drop forge hammer and when that thing falls no matter how far you are from it, you humble and tone your thought down instantly in respect of how powerful matter can be.
That hit will startle you the first time. People forget how important these machines are. When Germany fell in WWII the Americans were amazed at the size of the huge forges the Germans used. They liked them so much that they took several of them as reparations. One weighed 16 million pounds and produced 50,000 tons of force. The Russians took the best forges Germany had. The Mesta forge is really cool and has a heck of a storied history.
V 0
@@johnconnelly4053 movies
Beautiful color shots at about 3:42 of what appears to be a 1953 Studebaker Starliner coupe. The U.S. Navy jet fighter seen at the end is a Grumman F9F-6 Cougar (swept wing version of the straight wing Panther). Hey, note the guys working the forges, and for that matter the blacksmith, seemingly not wearing hearing protection. If that was the case, bet in a few years of this kind of work they found themselves saying, "could you repeat that please?" As they say, "Hear today, gone tomorrow."
As someone with severe tinnitus I cringe when I see stuff like that.
I'll bet a lot of them were happy about it because much of what people say isn't worth listening to anyway...
Personally, I believe the 1953 Starliner was one of the best styled car ever built. The design was use, with minor changers, until 1964. Take away the chrome, change the headlights and taillights and it would still look stylish today.
Hence modern osha standards. Foundry and forge workers today all wear huge levels of personal protection which includes ear muffs and such.
@@christopherconard2831 I've done commercial steel for most of my life and suffer also. Have you ever seen some of the natural remedies on YT? There's one that involves covering the ears and tapping on the skill base, for some reason it actually works, even if only for a few hrs. I do it a lot on the weekends when i'm concentrating on something like a crossword and the ringing starts to drive me mad. Who'd have thought silence could be so loud? LOL
Wow, ran a dropforge back in 94 to 97 when I was an apprentice. Hard work but the power was addictive.
Liar!
"Forging In Closed Dies". That's so sad. It had so much to live for.
I see what you did there.
When old shiny forged his last there he was seen to drop. Did he die one onlooker asked after the furious strike? No, another said as shiny rose again.
I've been a mechanic for 50 years, and I found this especially fascinating, seeing how these parts are formed. I have seen some old films on metal stamping for fenders and car bodies. I also have to wonder how these rugged men could work in these conditions for years on end. I imagine there were a lot of injuries on the job. Dust, sparks, noise, debris everywhere, and that big hammer inches away from your limbs. Imagine your first day on the job........
Damn those men bad hard working lives
If this would have been introduced to me as youngster, life would be incredible now, no doubt.
Cool stuff but hot grueling work and every shop has a guy missing some part of his hand.
One of my first jobs was in a die shop making forging die blanks and repairing dies. There were about 8 forging hammers there. Only one of them was a board hammer.
I've been showing these to my son so he knows what real work looks like.
I worked in a forge shop for six years it was mercer forge in mercer Pennsylvania I was a layout man and lnspector
Do you have any hearing left?
Thanks, Periscope! Those steam hammers were something else! Thanks again!
When I used to work in the space patch, one of the materials guys I knew told me of gigantic forges that were brought to the US from Germany after WWII that are used to make outsized aircraft forgings.
Yes, those machines were nicknamed "iron giants." In 1920s/30s, under Treaty of Versailles, Germany was prohibited from manufacturing certain military items, esp involving armor steel. So German engineers focused on using other materials like magnesium and high grades of then-novel aluminum. They developed forming techniques involving high-power stamping and presses. When WWII began, shot-down German aircraft were recovered and analyzed by US/English/Russian intel people, and they found all manner of "forged" articles, with novel metallurgy and high strength/performance. When war ended, there was as much of a race to recover German stamping & forging machines as for the rocket scientists. USSR Red Army captured some of the largest presses in Eastern Germany (and Silesia, which became part of Poland), which were sent back to Russia as trophies. And US/UK also recovered trophy presses in the Western regions of Germany, some of which remained in country, and some were returned to US/UK. This led to quite a bit of R&D in USA in 1940s/50s, leading to some of the largest systems such as Alcoa press in Cleveland, and several others around the country. Heavy press forging was considered a critical technology for industrial advancement and military production. It still is critical to any advanced economy (ask the Chinese), although most US policymakers are totally clueless about such things these days.
Lifespans were shorter years ago and this video illustrates a reason why. Those old videos showing production line workers spray painting cars without respirators are also an eye opener.
I can imagine those men had very little hearing left after a career of working a forge.
Yes, hearing loss, and just think of their lungs. That atmosphere is awful.
I was thinking this, too. I didn't notice one of them wearing any kind of hearing protection. I'd have a headache for a week.
We say thanks to them who create this things
Very humbling to see men work in the mouth of Hell with the tools of the Devil, while I tap on a keyboard 🙄
I'm mechanic the best job I ever had was working in machine shop
Great find, thanks 👍👍
And it's still done the same exact way. I design and build forging dies. They are sent to R and R forge in San Bernardino CA. where the parts are forged. I plan to make a series of videos on how it's done. I made the first one showing how I ruff out the punch from a solid block of tool steel th-cam.com/video/meims7jfNeg/w-d-xo.html more to come. I just retired and want to record the whole process so it is not forever lost.
How much has the precision of forging improved since this was made? From time to time I've heard about flashless forgings and forged powder metal. Most connecting rods for the auto industry today are made from forged powder metal.
@Andy Harman forging hasn't improved...the precision is in the dies.
What has improved is the materials being used for various items.
"I just retired and want to record the whole process so it is not forever lost."
Awesome. Thank you so much for doing this.
Company i worked for in the 70-80's, EPAG developed a closed forging system. A fixed weight of material was forged with no flash almost to finished surface finish. All went way of the the DoDo in the early nineties few years after i left. Lack of investment in British industry.
My boss made me redundant and said take our ideas to America and show them there how to do it and make a few bob. I never did. What if?
Wasted knowledge and experience.
13.59 we could have made a tool to make that forging in one operation close to finish tolerance. Zero to plus five thousand of a inch.
A lot of forgings would have up to 1/8 inch extra material around their circumference.
Forging like that is sorta done in conjunction with cbc machining processes sometimes. Saturate the grain structure where you want it with one or maybe two forming strikes then machine to finished. Best of both worlds application for stuff like rocket parts and so forth.
“… flow under the blows of the hammer” Good rap lyric there.
When I was an apprentice, at college, in the late lesson sometimes we enjoyed a film like this. I really enjoyed and learned a lot from them
I made reproduction firearm parts for the old German pistols and aerospace parts in the early part of my life and made forging dies for many of the parts just so I could get the flow of the metal correct. Then I would machine the parts. I always had strong parts that rarely broke.
Can I ask you a question? How would you go about making a U bracket out of 304 stainless 1/8" sheet? Is that a hydraulic press pressing into a steel form? Thanks for any info in advance!
Had a job in Jersey years ago working shoveling the years of lubricant from beneath a behemoth drop hammer.....The hammer sat on a 20ft.×20ft. concrete base that was 8ft thick, the whole thing sat on giant springs mounted to a lower level floor.....that's where the 3 foot deep sludge accumulated.....hard work even without the thought of all that weight above my head sitting on some springs.....
In case no one ever said it. Thank you. That's a hardcore job as greasy as it is needed.
Abandoned North Jersey YT has probably been there too.
@ maybe. Fair few drop forging plants in Jersey have been repurposed over the decades.
Eeek.
@@joshschneider9766 can you what kind of repurposing has been done to these plants?
Watching these videos you can definitely see why labor unions in American industry were a thing. We need to bring them back in a big way.
7:26 "Until the HAMMER MAN releases them for the next blow" --sound like words that came from the hammer man himself, Mr. "M.C. Hammer"
thats what made this world. Hard working people.
Back in the day when things were meant to LAST and be refurbished for further life, instead of sent to the lanfill and simply replaced.
Like the connecting rod in your vehicle , or like the dies themselves?
Long lasting and repairing stuff is bad for stock prices... selling you new stuff is good for stock prices! ;)
They still make stuff like that
There's no money in quality. Or worker safety or retention. That's the core tenet of corporate capitalism and greed.
@@TheDing1701 take it to communist cina, bub, see what they say.😅🤣😂
What a great video! thanks for sharing!
And For The Contributions They Make, Not Only To Our Standards Of Living But To Our Very Safety As A Nation.
22:25 absolutely majestic
Very informative and well filmed with excellent narrative.
Thank you. That was excellent. I have been a mechanic for 35 years and had not seen a crank forges. My Uncle was a tool and die maker and told me about theses machines as I grew up. now I understand a lot more.
In 1960 I had a Crankshaft CO. Forged crankshaft with counterweights on all throws for my 283 Chevy drag racer. It was a beautiful thing and expensive!
JIM 🤔
I love PeriscopeFilm
A good blacksmith doesn’t strike his anvil unnecessarily.
Tapping the anvil is extremely common between actual material strikes. I've talked with some smith's who unless it's brought to their attention don't even realize when they do it.
Most commonly it's used to maintain the rhythm and momentum of the actual "forging " strokes. And btw it's a light tapping not a strike on the anvil. It most definitely does not hurt the anvil.
Totaly amazing thxxx
Best movie I've ever seen.
I " forged" new respect for metal after watching this
Good lord. LOL!
I wish old educational films were easier to avoid. It's like a steel trap whenever I find one.
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My father was a drop forger in the 50s and 60s in the UK. By the time he was 40 his lungs were knackered and he had to find unskilled work somewhere else - no mention of compensation or redundancy etc. Needless to say I became a Labour voter as soon as I came of age.
The End ~ Thanks for the Great video.
Love these old promo films. 👍
Ten points to the music - it is the melody of the "Anvil Chorus" from "Il Trovatore".
Great video thanks!!!
This stuff is amazing
Man that was amazing
I enjoyed that - very much in fact!
Great video, as usual. Thanks!
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Would love to know more about how dies are made. Fascinating stuff.
3:51 Studebaker Loewy coupe. Yum!
Most fascinating.
Ever wonder how a crankshaft got its weird wiggle shape?
Well, now you know.
Your videos are gold. Thank you so much.
This video is now forged into my brain.
"Quite loud in here" "WHAT?!!" "I SAID IT'S LOUD IN HERE!!" "YES!! VERY HOT!! GET ME A COLD BEER TOO!!" LOL. Hard work for sure.
WHAT ABOUT THE AARDVARK!?
24:35 respect for that guy
So that's why the hammer moves up and down when not used!
And the blacksmith pounding on the anvil between blows to the metal being 👷worked?
@@putteslaintxtbks5166 habit and style
@@putteslaintxtbks5166 An anvil that is correctly made is 'live." That is the smith's hammer will bounce off the anvil. It helps to reduce the effort to bring the hammer up for the next blow after the smith determines where it should fall. Every little bit helps if you are doing this all day long.
In this case, yes. Not in every case. Some mechanical hammers do the same thing.
This looks like fun.......................
Great video. I wish there would have been more detail on how the dies are made.
That was awesome
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Now that was interesting.
I forged a check
I forged a knife
Forged a friendship
And forged my life
Steel's cherry red
Won't be mislead
So till I'm dead
I'll forge ahead.
@ Made it up based on different uses of "forge."
Your a funny guy !!
I would imagine that these workers had serious hearing damage after one day and were close to completely deaf in a month unless they were wearing very good protection.
This is why your grandpa says "WHAT?!" all the time.
25:12 'hmmm, this engine seems to be cut open."
"well there's your problem"
Great movie about the forging process. It is a shame that they didn't spend more time on die making.
Right!? Super interested in how that process worked back then. I work in a forge as a trimmer. Everything shown here is pretty similar to the way it’s done today.
@@xsmokebeersx1 Why are the forgings bursting into flames when hammered? What's actually burning?
@@Halinspark so there’s a guy hitting the die block with a stick before the hammer man begins hammering. What he’s doing is called swabbing. Basically lubricating the die with an oil/water solution. Helps prevent the forging from sticking to the block while being hammered. Perhaps he has too much oil in the swab bucket!
@@xsmokebeersx1 I didn't see it used much here, but they also use sawdust.
I used to use a really big planer to shape the die blocks. The blocks were made to dovetail into the hammer and locked in with a key.
18:20 - This is pre-CNC, so it would have been interesting to see how the final form was generated.
At one time, I worked on what were called 'die-sinking' mills. They had a hydraulically-controlled tracing arrangement where a wood mock-up was mounted to the table near the blank. The table was oscillated back and forth in the X-axis, and stepped uni-directionally along the Y-axis under a tracing finger with a cutter of the same dimension cutting the blank. The tracing hydraulic system followed the mock-up's Z-axis form and similarly drove the cutter. Pretty sure the vid pre-dated that tech, also.
Damn, you're old!!!!
@Current Batches I know this is an old video you commented on. But for a fun fact, tape cards came out in 1842 for the use on looms back in the day for rugs and blankets. Then in 1923 tape-cards or punch-cards were used in a cnc control for engine production, brake drums and car frames.
They used to call that Kellering too.
It was still used on a few parts up into the 1980s - I ran a floor mill (boring mill with a traveling column) in that era, one job was roughing material out of a forging die for a landing gear upright for the B1A - I would rough out most of the metal and then it would go to a Kellering shop for finishing.
A little bit on CNCs...
They hit the machining industry not long after this film was made, first as NCs and later CNCs.
The 'C' added up front came later when the controls on the machines became computers, able to calculate machine moves, store programs in memory, and track the moves the machine was programmed to make - this last function reduced the scrap caused by the machine not moving as programmed, they read encoders or scales in the machine and if the move isn't equal to what the machine is 'told' then it stops the machine and displays an error code.
That's a really short/simple explanation, there's SO much more but I'm sure you don't want to read a book's worth of information lol!!!
I'm still in the industry and taught CNC technology at a local college. From the beginning up to current technology is a long story!
nice
Got to love those British Mk2 army helmets being used as hard hats, correct me if i identified the hard hat wrong
This kind of technology of our grandparents generation was developed out of necessity and for survival; the two great wars. I’d say this era showed how what they may have lacked in today’s advanced technological advances they made up for in brain and brawn, sheer will power to succeed and triumph over a very real existential enemy. Today we have no such threats, hence the maxim; good times create weak men, weak men create hard times, hard times create strong men, strong men create good times.
Just because your weak doesnt mean we all are, some of us can make things in any form we choose using any method we choose, so your weakness doesnt transcend to everyone. nice retweeting of an old maxim though, at least you can read.
I didn't even know Forging In Closed was sick.
there are many cuts in this documentary , its real runtime 34 minutes
Not a single ear defender in sight .. Ah progress .. I said AH PROGRESS grandad .. :P
Where the ads are better quality than the opening.
imagine how fast these guys lost their hearing being next to those big hammers all day
What?
Сначала американцы снимали хорошие фильмы про промышленность, потом что-то затихли, тогда мы начали снимать.
А щас вообще никто не снимает...
Ah a Studebaker V8..probally the best V8 of the era by a large margin...
Drop Forging: Brought to you by the ACME Hearing Aid Co.
Ya didn’t see the Safety Rep very often back in them days….only when someone died
Real men with real jobs and real skills. Too bad we exported a lot of this work. We're still paying the price.
Also high quality
The die formed connrcting rods are mostly now made using sintered metal power and realitively cold formed. Of course high end connecting rods are still made from forgings.
Race to the bottom
Or simply cast and hardened. Lower quality and much less strong.
@@smithraymond09029 sintered metal has its own advantages and is hardly a race to the bottom.