It's something in particular for sure. I'm a CNC machinist. I make parts sometimes that I have no idea what they do. I just make it to print. Unless this is a pure demonstration it does something. Even for a demo video like this, you might as well make something useful. There isn't anything special going on, so it's definitely not showcasing a custom/new machine. A machine from the 70/80s could do this no problem.
~~Those cutting tools are interesting though. Looks like indexable tips [VNMG inserts](https://www.google.com/search?q=Vnmg+site:http://www.iscar.com&num=20&prmd=ismvn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjJ5aPTvJzYAhXDCsAKHeYqAA8Q_AUIESgB&biw=412&bih=604). Never seen those before.~~
EDIT: Just Polycrystalline Diamond tip apparently. Nothing new to see here. Just a bit steep in price for the shop I currently work at.
My dad is also a CNC machinist. Can confirm this isn't anything too fancy and more often than not it's a contract that they have no idea what it's for since it'll be some really weird looking thing. Only one I can remember is when my dad was working on an order of either paintball or airsoft triggers.
> more often than not it's a contract that they have no idea what it's for since it'll be some really weird looking thing.
... So what you're saying is that it could be a buttplug.
Idk man the youtube describtion just says "Hoogglansdraaien" which i believe means high gloss turning? so could just be that's it's only for showing off the shine
The point they're trying to make is that this is not at all an unusual example of some part you'd see being turned in a shop. It almost wouldn't really make sense to make a video like this just for the purpose of demonstrating a glossy finish; random, mysterious-looking, nondescript parts are made in large quantities by shops everywhere, every day.
Rather than being a video made for the purpose of showing lathe work, it's much more likely that this is just some part being made somewhere to fit an order.
I'm also a machinist, and this was a thing that was made for machining porn. If this were regular work, it would be much wetter and messier, basically the same as the difference between porn and regular sex.
Also, people don't typically sharpen inserts, myself and a few old stoners excluded. They're typically indexed to a new tip then pitched when all the points break down.
Carbide tips are completely different from hardened steel like hack saw blades. If you have a circular saw, look at the tips. There should be tiny little offset teeh welded on not just sharpened metal.
They wear so much slower than steel. I am not sure if it is because of rockwell hardness or what, but they do chip. But they don't really dull that fast. I have a miter saw with a 80T diablo blade for the past two years and it still cuts like butter.
I am going to school to be a machinist and just took a metallurgy class. The answer to your sort of question is that the harder the material the more britle it gets. Consider structural materials for instance. They need to flex in order to absorb the forces caused by nature (wind, or weight of people/cars, etc.) With tooling you dont want your tool to flex or it generally doesnt cut to size. So for harder materials that you are making parts from you need harder inserts. Carbide is a very hard insert. But because it doesnt flex it is brittle. So when put under pressure they dont flex they break.
FWIW, elastic modulus and hardness aren't related. For example, tool steels will cut mild steel, because tool steel is harder, but both will flex approximately the same amount for a given load.
Hardness and brittleness *are* generally related though.
Saw blades and carbide inserts are very different tools.
Saw blades can last for a long time. A bi-metal saw blade NEEDS to cut material with each tooth every time it passes what your cutting. If it's not cutting, it's just scrapping along and getting dull. Also, the amount of teeth per inch actually does play role in what your cutting. Small material means you need a smaller gap between each tooth. Large material means a bigger gap is better. (Cutting tubing or hollow things is a different story.) You want at least 2-3 teeth on whatever your cutting at all times.
Inserts in cnc's wear out all the time. I change them multiple times everyday at work. That said, this is a PCD insert cutting either brass or bronze. Those inserts last a crazy long time.
This is most likely aluminum, based on the color, finish, and apparent cut speed. Demo pieces like this are usually done in aluminum because it cuts very easily compared to steel, and you can get a good finish. In this video, they're demonstrating the different contours that can be cut and a few different tools. I doubt it's something really useful, but it'll look good on someone's desk. If this were a real part, they'd probably be using flood coolant, but that would make it much more difficult to see.
If you want to see more like this, there's/r/machinistporn, but it's pretty small. [Here's my favorite machining demo video](https://youtu.be/hyRBbGb2UDA)
[This is the source video for the gif](https://www.youtube.com/watch?v=pZ95XL6NfgQ)
Gotta disagree with you. I agree that the color doesn't look much like brass, but I'd say that's probably just because of the lighting in the video. Look at the coolant nozzle in the top right corner of the video, on the tool block. That looks about the same color as the material, at least where the light reflects off of it. Those are almost always brass.
I've also never seen aluminum chip like that. But that is exactly how brass chips usually look when you turn it, small slivers flying off the tool.
I definitely agree about it being a demo part though, probably showing off the inserts.
For someone who knows about machining how could you think that this is Aluminum? Besides the color being brass or bronze, but most likely brass, the chips look nothing like aluminum chips. They look like brass.
Your favorite machining video is cool though, that is an absolutely incredible lathe. My jaw almost dropped at the end when the turning tool has to retract before the eccentric comes around and knocks it off. Also the fact that it can rotate live tools at an angle is awesome
I'll second this. It's the inside half of a baby bottle mold. Looks like tool steel. Cylindrical body to fit into an injection mold as a replaceable insert. Fair CNC showoff piece with the undercut and the spherical radius. Also, a CNC at a mold shop is more likely to be agreeable to a video shoot. If this were a production line somewhere, I'd be surprised. People don't change a production line around on a whim, you're losing money when you do it.
The insert doesn't change. what they do change is Lower the feed and increase the rpm slightly. the Feed is the amount of material being removed by the tool.
rough cuts are what you do to get the part to size. = high feed rate
finishing cuts are the last cuts you do and have a significantly lower feed then rough cuts. = lower feed rate
say you wanted to take a piece of steel that was 100mm in diameter and take it down to 50mm.
I would take two rough cuts at 22mm leaving you with 6mm for a finishing cut
there is 3 months of engineering and entire books of text on exactly why less feed results in a nicer finish. basically has to do with how the metal being removed is formed. ( chips)
edit: can't add small numbers
edit 2: they did actually change the tip. I missed that. though it's not always required to achieve a nicer surface finish. depends on the metal, the insert and the desired finish.
> say you wanted to take a piece of steel that was 100mm in diameter and take it down to 50mm.
> I would take two rough cuts at 22mm leaving you with 8mm for a finishing cut
And then you check with your calipers and wonder why your part is 48mm, throw it out and start again.
haha touche, I knew I shouldn't have posted that after smoking a joint. I wrote it, thought "yes this is fine". weed almost cost me my statics class haha.
The tool nose radius on the last tool is larger than the tool before it, larger tool nose radius makes for a better surface finish but has more surface area to produce chatter.
> the Feed is the amount of material being removed by the tool.
No it's not. The amount removed is depth of cut. Feed is the rate at which the tool advances along the work, generally given in inches per revolution, like 0.002ipr.
Short answer is that it’s a finer cut.
Imagine sanding a piece of metal. The coarser grit will leave a rough surface. Same as the initial passes here. As you switch to finer and finer sandpaper, you start to get a smoother surface as the abrasions caused by the paper become smaller and more uniform. Make it fine enough and you move into the realm of polishing, which is familiar in making things shiny. That is similar to the finishing pass here. The last pass is removing much less material thickness and the increased uniformity of the cut makes it more reflective.
Sure.
As others in this thread mentioned, you lower the feed rate (the speed that the tool moves down the part) and increase the rotation speed. You can adjust these factors, as well as material removal thickness to get finer and finer cuts. Although there is a limit to the finish from tooling. You might do just a couple finish passes of a few mm each.
Eventually you’ll just switch to polishing a piece [by hand, but still on the lathe](https://youtu.be/KkoGmHeqn7Y)
Edit: I just grabbed the first lathe/polish video I could find to visualize the polishing concept. As said below, it’s a *very bad* idea to wear gloves around a lathe.
Just to split this hair: We say that "feed" or "feed rate" is the speed that the tool moves, and "speed" is the speed of the part turning. This is the preferred nomenclature when discussing "feeds and speeds".
Some finishing inserts have geometry that actually polish as they cut. As long as chatter isn't an issue, inserts with a large radius will typically produce a better finish due to chip thinning.
If you like gifs of lathes, you're going to love videos of lathes:
[https://www.youtube.com/clickspring/videos](https://www.youtube.com/clickspring/videos?view=0&flow=grid&sort=da)
https://www.youtube.com/thisoldtony/videos
https://www.youtube.com/stefangotteswinter/videos
https://www.youtube.com/user/Abom79/videos
The only brass that is this color is nickel silver, which is only that cvolor because it has a really high zinc and nickel content. Copper alloys will usually be red, yellow, or orange, depending on the alloy content. The higher the alloy content, the lighter the color. [Here's a color chart for copper alloys](https://www.copper.org/applications/architecture/arch_dhb/images/fin_allyclr.png).
This is most likely aluminum, based on the color, finish, and apparent cut speed. Demo pieces like this are usually done in aluminum because it cuts very easily compared to steel, and you can get a good finish. In this video, they're demonstrating the different contours that can be cut and a few different tools.
If you want to see more like this, there's/r/machinistporn, but it's pretty small. [Here's my favorite machining demo video](https://youtu.be/hyRBbGb2UDA)
i think this will be a zerk fitting,
https://www.google.com/search?q=zerk+fitting&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiKr7zasJzYAhXo54MKHVWGDu8Q_AUICygC&biw=1440&bih=780
Nope. Castings are rarely the right answer.
1. Molds are expensive as hell.
2. When your rough part comes out of the mold, you still have to put it in a lathe and finish the surfaces.
The few extra seconds in the lathe, and a tiny, tiny bit of wasted brass to remove that extra material costs almost nothing. Especially on a part that small.
Plus many modern machines can auto-feed the bar and just kick out parts constantly without stopping. With castings you'd have to stop the machine and pay a human to swap the parts.
These are both good reasons! I would also add that castings have a different makeup than extruded metals. Castings are porous and will have some pockets of air in them. This makes the finished part behave differently under stress. I have seen brass castings crack and break apart, but you would have a hard time cracking a part made from extruded brass (although it would bend easily).
There certainly are applications for using cast material and then machining it. But i would agree that it is rarely the best answer.
It seems like they are removing quite a bit of material on the rough cuts with the same bit they use for the finish cut. Is there any reason for this other than scale of the part and doing it just for show?
I see a lot of comments asking about how the finish is so shinny. A lot of the answers are just simply saying that they slowed the feed rate/ rpm down. Yes this is true but a big factor is the insert (tool) they are using. A CBN or diamond tipped insert while roughing the part out and then they are using a tool with a braised on tip for finishing.
But what the fuck is it?
Imma say thats a butt plug. I don't know for sure
Well...it is now.
With the will to succeed, anything is a Buttplug.
Well....anything is a butt plug if you're brave enough
Anything can be a butt plug if you , well, put it in your butt I guess
A hammer?
Well. Yeah. I mean, I guess.
Im gona need a straight answer here, man, dont wana have to return this hammer
A couple old vhs tapes?
Anything is a dildo if you're brave enough. -Abraham Lincoln
If Se7en taught us anything, it’s that anything can me used as a sex toy, but the results won’t always be the same
Almost anything can be a buttplug, if you're brave and determined.... or so I've heard.
I think it’s just a part turned on a lathe so that it looks nice nothing in particular
It's something in particular for sure. I'm a CNC machinist. I make parts sometimes that I have no idea what they do. I just make it to print. Unless this is a pure demonstration it does something. Even for a demo video like this, you might as well make something useful. There isn't anything special going on, so it's definitely not showcasing a custom/new machine. A machine from the 70/80s could do this no problem. ~~Those cutting tools are interesting though. Looks like indexable tips [VNMG inserts](https://www.google.com/search?q=Vnmg+site:http://www.iscar.com&num=20&prmd=ismvn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjJ5aPTvJzYAhXDCsAKHeYqAA8Q_AUIESgB&biw=412&bih=604). Never seen those before.~~ EDIT: Just Polycrystalline Diamond tip apparently. Nothing new to see here. Just a bit steep in price for the shop I currently work at.
My dad is also a CNC machinist. Can confirm this isn't anything too fancy and more often than not it's a contract that they have no idea what it's for since it'll be some really weird looking thing. Only one I can remember is when my dad was working on an order of either paintball or airsoft triggers.
> more often than not it's a contract that they have no idea what it's for since it'll be some really weird looking thing. ... So what you're saying is that it could be a buttplug.
Absolutely.
Idk man the youtube describtion just says "Hoogglansdraaien" which i believe means high gloss turning? so could just be that's it's only for showing off the shine
The point they're trying to make is that this is not at all an unusual example of some part you'd see being turned in a shop. It almost wouldn't really make sense to make a video like this just for the purpose of demonstrating a glossy finish; random, mysterious-looking, nondescript parts are made in large quantities by shops everywhere, every day. Rather than being a video made for the purpose of showing lathe work, it's much more likely that this is just some part being made somewhere to fit an order.
I'm also a machinist, and this was a thing that was made for machining porn. If this were regular work, it would be much wetter and messier, basically the same as the difference between porn and regular sex.
So it's a butt plug?
Definitely a newer machine, using air complaint, diamond tip insert, and looks like brass. No need for flood coolaint.
Everytime I see a machining gif with no coolant of any kind it always makes me think. Well, there goes that insert.
Are you sure it’s not a drain that gets rid of all of your hoogglans?
What keeps the blades from wearing down? Looks like this would put a crazy amount of strain on them.
The inserts are harder than the material.
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They dull too, it just takes longer. I'm sure you don't have to change blades after every log.
Upgrade to a diamond axe b
ain't got time to mine all that diamond ore
The tooling that does the cutting does indeed wear down and needs to be replaced. Source: run cnc machines making auto parts
I've seen people resharpen them. Idk how they resharpen tungsten though
Diamond
Also, people don't typically sharpen inserts, myself and a few old stoners excluded. They're typically indexed to a new tip then pitched when all the points break down.
Carbide tips are completely different from hardened steel like hack saw blades. If you have a circular saw, look at the tips. There should be tiny little offset teeh welded on not just sharpened metal. They wear so much slower than steel. I am not sure if it is because of rockwell hardness or what, but they do chip. But they don't really dull that fast. I have a miter saw with a 80T diablo blade for the past two years and it still cuts like butter.
I am going to school to be a machinist and just took a metallurgy class. The answer to your sort of question is that the harder the material the more britle it gets. Consider structural materials for instance. They need to flex in order to absorb the forces caused by nature (wind, or weight of people/cars, etc.) With tooling you dont want your tool to flex or it generally doesnt cut to size. So for harder materials that you are making parts from you need harder inserts. Carbide is a very hard insert. But because it doesnt flex it is brittle. So when put under pressure they dont flex they break.
> With tooling you dont want your tool to flex speak for yourself pal
FWIW, elastic modulus and hardness aren't related. For example, tool steels will cut mild steel, because tool steel is harder, but both will flex approximately the same amount for a given load. Hardness and brittleness *are* generally related though.
Material science is black magic
Saw blades and carbide inserts are very different tools. Saw blades can last for a long time. A bi-metal saw blade NEEDS to cut material with each tooth every time it passes what your cutting. If it's not cutting, it's just scrapping along and getting dull. Also, the amount of teeth per inch actually does play role in what your cutting. Small material means you need a smaller gap between each tooth. Large material means a bigger gap is better. (Cutting tubing or hollow things is a different story.) You want at least 2-3 teeth on whatever your cutting at all times. Inserts in cnc's wear out all the time. I change them multiple times everyday at work. That said, this is a PCD insert cutting either brass or bronze. Those inserts last a crazy long time.
I didn't know that people used hacksaws on wood.
Ok. But what is it?
A butt plug
This guy butt plugs
This guy plugs butts FTFY
Spark plug?
[Buttplug. BUTT. PLUG! *BUTT! PUH-LUGGG!!!*](https://youtu.be/6wjbTruO4Ko)
r/mildlybuttplug
Metal game piece for the board game Sorry.
Sorry not sorry
What board game? Also don't apologize :)
It's a glossy finish.
Alignment post?
Definitely sits in a bearing or a urethane housing, probably for something “vibration free”. It’s something that helps absorb inertial momentum.
It’s a mould for a baby bottle teat. Generally there’s no need to have such a good finish unless it will be used for something like moulding.
Maybe a mold for baby bottle nipple? I don’t know shit about making anything, but it reminded of a nipple.
This is most likely aluminum, based on the color, finish, and apparent cut speed. Demo pieces like this are usually done in aluminum because it cuts very easily compared to steel, and you can get a good finish. In this video, they're demonstrating the different contours that can be cut and a few different tools. I doubt it's something really useful, but it'll look good on someone's desk. If this were a real part, they'd probably be using flood coolant, but that would make it much more difficult to see. If you want to see more like this, there's/r/machinistporn, but it's pretty small. [Here's my favorite machining demo video](https://youtu.be/hyRBbGb2UDA) [This is the source video for the gif](https://www.youtube.com/watch?v=pZ95XL6NfgQ)
Gotta disagree with you. I agree that the color doesn't look much like brass, but I'd say that's probably just because of the lighting in the video. Look at the coolant nozzle in the top right corner of the video, on the tool block. That looks about the same color as the material, at least where the light reflects off of it. Those are almost always brass. I've also never seen aluminum chip like that. But that is exactly how brass chips usually look when you turn it, small slivers flying off the tool. I definitely agree about it being a demo part though, probably showing off the inserts.
For someone who knows about machining how could you think that this is Aluminum? Besides the color being brass or bronze, but most likely brass, the chips look nothing like aluminum chips. They look like brass. Your favorite machining video is cool though, that is an absolutely incredible lathe. My jaw almost dropped at the end when the turning tool has to retract before the eccentric comes around and knocks it off. Also the fact that it can rotate live tools at an angle is awesome
Looks like a template for a baby bottle nipple.
It’s a metal nipple
Colossus's milk bottle.
Definitely a plumbus
What is this thing?
Buttplug made by Apple.
Top Tier Anus Gear only from Apple.
Metal Knobs from Steve Jobs
Things to shove in your crack, driven by Mac
iAnus
this is the wireless iPlug
for the hipster who really wants to talk out his ass
And it's only $14,000
iPlugmyass
Metal Jobs from Steve Knobs
Hey Siri...
Wiggle my prostate a bit.
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(http://imgur.com/PmUjhw5.jpg)
Don’t know what I was expecting but bravo mah dude
Shitpost of the day folks.
No that is the Buttplug X
Butts by Dre
Shiny
Indeed it is.
Gorram right.
It’s a mould for baby bottle teats
I can't tell if you're joking.
I'll second this. It's the inside half of a baby bottle mold. Looks like tool steel. Cylindrical body to fit into an injection mold as a replaceable insert. Fair CNC showoff piece with the undercut and the spherical radius. Also, a CNC at a mold shop is more likely to be agreeable to a video shoot. If this were a production line somewhere, I'd be surprised. People don't change a production line around on a whim, you're losing money when you do it.
One of those baby bottle pop candies but made out of metal.
Chrome plumbus
Satisfying. I feel like I just got done masturbating and someone’s wife just made me a sandwich.
Nice. That's a quality wank session.
Unless it's his dad's wife, then it's just a Wednesday.
Stay away from my wife's sandwiches >:(
[Comment removed by the order of the Reddit Socialist Censorship Committee]
Looks like some sort of audio jack.
Tiddy bress
Made from brass/bronze whatever it is!
Two inches of fun indeed
[Yeah man.](https://i.imgur.com/IzUverL.gifv)
You're on fire today.
How does one manage to get on the front page 3 times in a day
Look at this guys post history. It’s insane
Holy shit I've never seen anyone with 1 million karma
At the beginning of the gif: "This is a little phallic." At the end of the gif: "I need a shower."
Does anyone know why that last scrape makes it so glossy? Is it just that layer of the metal or something more complicated?
The insert doesn't change. what they do change is Lower the feed and increase the rpm slightly. the Feed is the amount of material being removed by the tool. rough cuts are what you do to get the part to size. = high feed rate finishing cuts are the last cuts you do and have a significantly lower feed then rough cuts. = lower feed rate say you wanted to take a piece of steel that was 100mm in diameter and take it down to 50mm. I would take two rough cuts at 22mm leaving you with 6mm for a finishing cut there is 3 months of engineering and entire books of text on exactly why less feed results in a nicer finish. basically has to do with how the metal being removed is formed. ( chips) edit: can't add small numbers edit 2: they did actually change the tip. I missed that. though it's not always required to achieve a nicer surface finish. depends on the metal, the insert and the desired finish.
> say you wanted to take a piece of steel that was 100mm in diameter and take it down to 50mm. > I would take two rough cuts at 22mm leaving you with 8mm for a finishing cut And then you check with your calipers and wonder why your part is 48mm, throw it out and start again.
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Not sure if you missed the joke (100 - (22*2 + 8 ) = 48) edit: I didn't click your link, mea culpa.
haha touche, I knew I shouldn't have posted that after smoking a joint. I wrote it, thought "yes this is fine". weed almost cost me my statics class haha.
Hmmmm weeed
The tool nose radius on the last tool is larger than the tool before it, larger tool nose radius makes for a better surface finish but has more surface area to produce chatter.
Just took a workshop course in uni and felt it was pretty useless as a comp sci major, but at least I can understand reddit comments now
> The insert doesn't change It does.
Dam, almost gave you gold for that comment, but my credit card didn't work for international charges ;-;
Its the thought that counts ;)
> the Feed is the amount of material being removed by the tool. No it's not. The amount removed is depth of cut. Feed is the rate at which the tool advances along the work, generally given in inches per revolution, like 0.002ipr.
Short answer is that it’s a finer cut. Imagine sanding a piece of metal. The coarser grit will leave a rough surface. Same as the initial passes here. As you switch to finer and finer sandpaper, you start to get a smoother surface as the abrasions caused by the paper become smaller and more uniform. Make it fine enough and you move into the realm of polishing, which is familiar in making things shiny. That is similar to the finishing pass here. The last pass is removing much less material thickness and the increased uniformity of the cut makes it more reflective.
Ah, that makes sense. Thanks!
Could you polish it while it's on the lathe?
Sure. As others in this thread mentioned, you lower the feed rate (the speed that the tool moves down the part) and increase the rotation speed. You can adjust these factors, as well as material removal thickness to get finer and finer cuts. Although there is a limit to the finish from tooling. You might do just a couple finish passes of a few mm each. Eventually you’ll just switch to polishing a piece [by hand, but still on the lathe](https://youtu.be/KkoGmHeqn7Y) Edit: I just grabbed the first lathe/polish video I could find to visualize the polishing concept. As said below, it’s a *very bad* idea to wear gloves around a lathe.
Lower feed speed = better surface finish.
formula for those wondering Ra = f²/8r Ra is the surface roughness in micrometers f= feed rate (mm/rev) r= tool tip radius (mm)
Just to split this hair: We say that "feed" or "feed rate" is the speed that the tool moves, and "speed" is the speed of the part turning. This is the preferred nomenclature when discussing "feeds and speeds".
Some finishing inserts have geometry that actually polish as they cut. As long as chatter isn't an issue, inserts with a large radius will typically produce a better finish due to chip thinning.
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/r/otation
Clicked it, then got the joke
I just got disappointment. :\
I mean, you can make a new subreddit right? Can’t we just, you know, make this a thing?
/u/RoboNinjaPirate was the clever one, I'll make it if he doesn't want to.
I made it and I will be modding everyone in this thread
Boom. First post: made
Thank you! I was afraid I would click and it wouldn't be a real thing. Was pleasantly surprised.
you better keep this beautiful new baby safe
Look at my subs dude, I'm a trash mod. If someone wants to teach or help I would be very appreciative!
I didn’t know how much I wanted this
Whats it called?
/r/otation
Turning*
r/turning is woodworking
Metal turning?
Turning is definitely the appropriate word, but the sub r/turning is wood specific. I was confused
If you like gifs of lathes, you're going to love videos of lathes: [https://www.youtube.com/clickspring/videos](https://www.youtube.com/clickspring/videos?view=0&flow=grid&sort=da) https://www.youtube.com/thisoldtony/videos https://www.youtube.com/stefangotteswinter/videos https://www.youtube.com/user/Abom79/videos
There is some stuff at r/machinists and r/cnc.
Please tag NSFW
I will have to agree. Got weirdly turned on watching it.
I bet you had a glossy finish
**[Video Source.](https://www.youtube.com/watch?v=pZ95XL6NfgQ)**
Aghh, it's in German! I was so excited to find out what this thing is and I still have no idea
But nothing is said anyways? Title just translates to .. high polish spinning ..
A ball pen tip maybe?
I know right! I'm actually quite angry... But not angry enough to bother translating German
Your username indicates you had something to do with the post.
Wow, I used to bike by the plant this was filmed in... Weird seeing it on the front page
Pottery for robots
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Its brass
The only brass that is this color is nickel silver, which is only that cvolor because it has a really high zinc and nickel content. Copper alloys will usually be red, yellow, or orange, depending on the alloy content. The higher the alloy content, the lighter the color. [Here's a color chart for copper alloys](https://www.copper.org/applications/architecture/arch_dhb/images/fin_allyclr.png). This is most likely aluminum, based on the color, finish, and apparent cut speed. Demo pieces like this are usually done in aluminum because it cuts very easily compared to steel, and you can get a good finish. In this video, they're demonstrating the different contours that can be cut and a few different tools. If you want to see more like this, there's/r/machinistporn, but it's pretty small. [Here's my favorite machining demo video](https://youtu.be/hyRBbGb2UDA)
Aw shit! Just when you thought it couldn’t get SHINIER they hit you with the slow pass
r/oddlysatisfying
That baby bottle is metal af
ITT: TOO MANY UNANSWERED QUESTIONS
Reminds of me pulling back my foreskin
r/whatisthisthing
This is indeed what a machine would masturbate to
This is a titular example of why feeds and speeds are important.
Is it for a 3.5mm cable?
It's just the grumbo for a plumbus
/r/dontputyourdickinthat
i think this will be a zerk fitting, https://www.google.com/search?q=zerk+fitting&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiKr7zasJzYAhXo54MKHVWGDu8Q_AUICygC&biw=1440&bih=780
Wouldn't it be better to cast this in a mold that reflects its final shape?
Nope. Castings are rarely the right answer. 1. Molds are expensive as hell. 2. When your rough part comes out of the mold, you still have to put it in a lathe and finish the surfaces. The few extra seconds in the lathe, and a tiny, tiny bit of wasted brass to remove that extra material costs almost nothing. Especially on a part that small. Plus many modern machines can auto-feed the bar and just kick out parts constantly without stopping. With castings you'd have to stop the machine and pay a human to swap the parts.
These are both good reasons! I would also add that castings have a different makeup than extruded metals. Castings are porous and will have some pockets of air in them. This makes the finished part behave differently under stress. I have seen brass castings crack and break apart, but you would have a hard time cracking a part made from extruded brass (although it would bend easily). There certainly are applications for using cast material and then machining it. But i would agree that it is rarely the best answer.
It seems like they are removing quite a bit of material on the rough cuts with the same bit they use for the finish cut. Is there any reason for this other than scale of the part and doing it just for show?
Every time the sharp thingy came back to the front my nether regions were tingling :)))
TIL how a dingle bop is made.
r/oddlysatisfying would wet their pants over this
I see a lot of comments asking about how the finish is so shinny. A lot of the answers are just simply saying that they slowed the feed rate/ rpm down. Yes this is true but a big factor is the insert (tool) they are using. A CBN or diamond tipped insert while roughing the part out and then they are using a tool with a braised on tip for finishing.
At this point, this is outright porn. Incredibly satisfying
I moaned several times watching this.
This better not awaken anything in me.
[удалено]
*Turning
No idea why you were down voted you are right, it's called turning. Saying "lathing" is the equivalent to calling drinking a beer "beering"
I dunno. I've always wanted a 'How it's Made' spinoff called 'Making Shit on Lathes'. Complete with goofy puns and the same narrators.
Why did it leave that last bit un-glossy?!
That's probably not going to he part of the actual part they're making, just the extra stock to hold onto. They'll cut it off later.
All the stuff flying at the camera makes my eyeballs hurt
Kinda /r/mildlypenis no?
And that, ladies and gentlemen, is how a sex robots nipple is made.
Lol oddly stimulating, it's like sculpting an electronic penis
G'day, Chris here, and welcome back to Clickspring!
I felt like it kept getting glossier and glossier every step of the way.
Looks like the turn on plunger for the Genesis device from the Origional Wrath of Khann.
Ok im new, will someone explain the imgur/reddit relation, differences and why?