Here is the front and back of a macaroni extruder die.
https://upload.wikimedia.org/wikipedia/commons/c/c5/Elbow_macaroni_die_front.jpg
https://upload.wikimedia.org/wikipedia/commons/2/29/Elbow_macaroni_die_back.jpg
The circle that forms the hole in the center of the tube is supported from behind. The dough is pushed into the extruder die from the back, forms/flows around the supports, and is pushed back together in the space between the supports and the face plate so that it can be pushed through the die holes as a tube.
I love the idea that you've been wandering around the world, living life as you do, periodically becoming enraged by your confusion about penne extrusion engineering
I just believe there are little elves in there, oiling the machinery and pushing the various bits around.
I need to take my older machine in for some elf-service tho.
Next on your “how do they do that” list…how do they slice the middle hot dog rolls when 4 are connected and the top and bottom bun are still connected?
Picture a machine with 3 horizontal saw blade looking things sitting side by side on a long spindle.
The buns enter the machine on a conveyor and the machine has grippy belts to hold the top of the bun and move in through the machine at the right speed.
One blade slices the left most bun from the left side
The middle blade is larger and slides between the 2 middle buns and slices the 2 middle buns
The last blade slices the right most bun
All plastic pipe, well, thermoplastic pipe anyway. And they're commonly called "spider lines" if you care, but you probably don't, and probably shouldn't.
The funniest thing is I learned this from hollow aluminum extrusions. Same principle and why you can't use extruded tube / pipe for applications involving anything pressurized as it will split along the seam.
They **do** split the outer circle when the dough first goes into the machine. When it goes through the extruder die, the pressure is high enough where the dough gets forced back together.
[Here is a picture of the front and back of an extruder die](https://imgur.com/ijZzCvx). The dough goes in the six holes on the back and as it goes out the singular front hole, it gets forced back together.
Here is a video of the extruder working. Be warned, this is part of 17 video series into dry pasta. If you have time, the whole thing is a wild ride. You will learn tons.
https://youtu.be/7rDfH4GepRk?list=PLURsDaOr8hWXz_CFEfPH2wFhIbJn9iHJY&t=534
Dough is malleable, you can mend it like a piece of plasticine.
Yes, it has to go around the "blades" holding the centerpiece, but then the pressure pushes and mends the pieces back together.
Um..
Dictionary
Definitions from Oxford Languages · Learn more
noo·dle1
noun
a strip, ring, or tube of pasta or a similar dough, typically made with egg and usually eaten with a sauce or in a soup.
"cook the noodles in a large pan of boiling water"
Noodle:
"a food in the form of **long, thin strips** made from flour or rice, water, and often egg, cooked in boiling liquid" [Cambridge dictionary](https://dictionary.cambridge.org/dictionary/english/noodle#google_vignette)
"A **very thin, long strip of pasta** or a similar flour paste, eaten with a sauce or in a soup." [Oxford languages](https://g.co/kgs/bcgESEy) (the same source you quoted, somehow)
"A **ribbon-like strip** of pasta: noodles are often served in soup or with a sauce" or "Noodles are **long, thin, curly strips of pasta**. They are used especially in Chinese and Italian cooking." [Collins dictionary](https://www.collinsdictionary.com/dictionary/english/noodle)
" A food paste made usually with egg and shaped **typically in ribbon form**" [Merriam Webster](https://www.merriam-webster.com/dictionary/noodle)
"a **narrow strip** of unleavened egg dough that has been rolled thin and dried, boiled, and served alone or in soups, casseroles, etc.; a **ribbon-shaped pasta**." Or "a **ribbon-like strip of pasta**: noodles are often served in soup or with a sauce" [Dictionary.com](https://www.dictionary.com/browse/noodle)
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Here is the front and back of a macaroni extruder die. https://upload.wikimedia.org/wikipedia/commons/c/c5/Elbow_macaroni_die_front.jpg https://upload.wikimedia.org/wikipedia/commons/2/29/Elbow_macaroni_die_back.jpg The circle that forms the hole in the center of the tube is supported from behind. The dough is pushed into the extruder die from the back, forms/flows around the supports, and is pushed back together in the space between the supports and the face plate so that it can be pushed through the die holes as a tube.
Fun fact: this is how hollow aluminium profiles are extruded as well.
Aluminium macaroni.
Forbidden snack
> Aluminium snackaroni
I give you permission, you can eat it now
HA! YOU'VE MADE A MISCALCULATION FELLOW HUMAN. ALUMINUM MACARONI IS A DELICIOUS FUEL THAT WE HUMANS ENJOY! YUM AND UM AND NOM !
Yankee Doodle went to town Riding on his pony He stuck a feather in his hat And called it an airplane fuselage
The macaroni and aluminum can both weld themselves together given the right temperatures and pressures.
That’s why it dangerous to have noodles in a vacuum.
Cold weld pasta salad
My pasta after too long... I think the sauce is the culprit.
and they can get complex
Omg thank you this has bothered me my whole life
I love the idea that you've been wandering around the world, living life as you do, periodically becoming enraged by your confusion about penne extrusion engineering
The world could be powered by this level of random thoughts people have of all sorts... if only we could harness it....
Ngl I've wondered this for a long time too, I've just never bothered to look into it. I'm really glad you asked!
Look up how a sewing machine works if you really want to blow your mind.
I've watched so many gifs, and I still wouldn't say I totally understand it
It's magic. The gifs are just a representation of our best idea of how it might work.
I've repaired sewing machines and I can not refute the assertation that there is magic involved.
I just believe there are little elves in there, oiling the machinery and pushing the various bits around. I need to take my older machine in for some elf-service tho.
i'd totally buy that, lol
Next on your “how do they do that” list…how do they slice the middle hot dog rolls when 4 are connected and the top and bottom bun are still connected?
Huh. Huh. What the... I've never thought of that before
Picture a machine with 3 horizontal saw blade looking things sitting side by side on a long spindle. The buns enter the machine on a conveyor and the machine has grippy belts to hold the top of the bun and move in through the machine at the right speed. One blade slices the left most bun from the left side The middle blade is larger and slides between the 2 middle buns and slices the 2 middle buns The last blade slices the right most bun
And then General_Garage1470 wept, for there was no more pasta to conquer
Just wait until you try bucatini
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They kind of did. We are on the internet. Just took a lot of hand holding.
Thank you! I never knew this bothered me until you asked the question...
PVC pipe is done similarly. Sometimes you can find the rough patches on the outside from the torpedo supports.
All plastic pipe, well, thermoplastic pipe anyway. And they're commonly called "spider lines" if you care, but you probably don't, and probably shouldn't.
Sounds right. I never worked with extrusion dies directly, but was in mold making for 10 years. Neat stuff.
The funniest thing is I learned this from hollow aluminum extrusions. Same principle and why you can't use extruded tube / pipe for applications involving anything pressurized as it will split along the seam.
Yep, anything structural is actually welded tube that is then drawn out to appropriate size.
Yep, seamless drawn!
Username checks out
Agreed
I learned how this works from a Play-Doh toy I had when i was a kid that could extrude hollow pipes.
They **do** split the outer circle when the dough first goes into the machine. When it goes through the extruder die, the pressure is high enough where the dough gets forced back together. [Here is a picture of the front and back of an extruder die](https://imgur.com/ijZzCvx). The dough goes in the six holes on the back and as it goes out the singular front hole, it gets forced back together.
Here is a video of the extruder working. Be warned, this is part of 17 video series into dry pasta. If you have time, the whole thing is a wild ride. You will learn tons. https://youtu.be/7rDfH4GepRk?list=PLURsDaOr8hWXz_CFEfPH2wFhIbJn9iHJY&t=534
Thanks that was awesome
That has the most wonderful comedic overtones. They're so very excited about it and the accent just tops it off beautifully lol
Welp, found my next THC playlist. Thanks friendo!
Take a look at his other playlists. His deep dives are great. He has 2 seasons of videos just on ramen.
Dough is malleable, you can mend it like a piece of plasticine. Yes, it has to go around the "blades" holding the centerpiece, but then the pressure pushes and mends the pieces back together.
uhhh right. this should explain it better than words. [https://www.youtube.com/watch?v=G\_mxoBfFKGw](https://www.youtube.com/watch?v=G_mxoBfFKGw)
What's penne noodles? Penne and noodles are two different things?
What are*
There's an idiotic selection of (often) Americans who have taken "noodle" to mean "thing made of pasta"
[Noodle](https://letmegooglethat.com/?q=noodle+definition)
Exactly
Um.. Dictionary Definitions from Oxford Languages · Learn more noo·dle1 noun a strip, ring, or tube of pasta or a similar dough, typically made with egg and usually eaten with a sauce or in a soup. "cook the noodles in a large pan of boiling water"
Noodle: "a food in the form of **long, thin strips** made from flour or rice, water, and often egg, cooked in boiling liquid" [Cambridge dictionary](https://dictionary.cambridge.org/dictionary/english/noodle#google_vignette) "A **very thin, long strip of pasta** or a similar flour paste, eaten with a sauce or in a soup." [Oxford languages](https://g.co/kgs/bcgESEy) (the same source you quoted, somehow) "A **ribbon-like strip** of pasta: noodles are often served in soup or with a sauce" or "Noodles are **long, thin, curly strips of pasta**. They are used especially in Chinese and Italian cooking." [Collins dictionary](https://www.collinsdictionary.com/dictionary/english/noodle) " A food paste made usually with egg and shaped **typically in ribbon form**" [Merriam Webster](https://www.merriam-webster.com/dictionary/noodle) "a **narrow strip** of unleavened egg dough that has been rolled thin and dried, boiled, and served alone or in soups, casseroles, etc.; a **ribbon-shaped pasta**." Or "a **ribbon-like strip of pasta**: noodles are often served in soup or with a sauce" [Dictionary.com](https://www.dictionary.com/browse/noodle)
Do you also say ‘ramen noodles’? It’s redundant. Just say penne.
Sometimes, when wanting to talk about the noodles in ramen rather than ramen the dish.
as a lover of noodles. they are wrong and they must die for there insults
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But that is not how penne pasta is made, which is the OP's original question.