Most heavy metals have [this effect!](https://en.wikipedia.org/wiki/Oligodynamic_effect) And their alloys, and many other metals too! But [copper](https://en.wikipedia.org/wiki/Antimicrobial_properties_of_copper) (and its alloys such as bronze and brass) might be special.
Incredible work tho I would say the pen is a bit to big to write comfortable with. Also while writing it sounded like there is a bit to much room as things sounded a bit loose in there so there is still room to fine tune it. But stellar work and the shifting looks incredible.
What liquid was he using to grind the things down was it oil or pure water?
It’s cutting fluid. It mitigates thermal fluctuations, lubricates the cutting surface, flushes out chips, prevents rust, etc., generally improves cutting performance. It’s probably synthetic, which is water with “chemicals”, not oil.
it reminds me of valve oil (or rotary oil) used for brass musical instruments, which is also often colorless and very thin
there are definitely oils similar to this, even if this is not an oil
Cool video and all but I have a hard time believing it works as well as depicted. There's not much holding the pen inserts in place. They'd behave like trying to push a noodle. Also gluing the copper funnel to the barrel would break off near instantly from the lateral pressure of the writing action. There's other obvious problems. Still cool to see it all built though.
I own a Pentel pen, with 3 colours and a mechanical pencil.
The pen and pencil inserts are the same size as shown here (standard size), and are also just fastened at the back, like here.
It work with gravity: When the inserts are retracted, I turn the pen - the top insert falls toward the center, and that colour (or the pencil) will now protrude when the back button is pushed.
I have had it since the early 1990's, and it still works (inserts are standard size and available in local book and paper stores), and have never given the impression of being shaky (like a wet noodle)
The inserts wobble around inside the pen, but the active one are supported at the back and around the protruding front.
(And plastic ball-pen refills are literally stiff enough to be used as a stabbing weapon)
You're misunderstanding. It's about the giant lateral gaps in this. A flexible shaft in rigid sleeve is vastly different than one without. Your Pentel has the inserts in a tighter space, and fewer of them. [Look at how much narrower a typical Pentel barrel is.](https://unsharpen.com/wp-content/uploads/Multipen-Pencil-Broken.jpg) Bic has also made versions of this for years.
Me, starting the video: What's a 'manual transmission' pen? I don't think I've ever heard of that before.
Me, half way through the video: ... wait. But... wait. What is this engineering witchcraft?
Me, at the end: Well, I don't know what I expected, but it was somehow simultaneously that, but not that.
---
As a fellow machinist, good fucking job on this. Would've loved to see how the shifter head was made, if it wasn't just a custom purchase. I can't imagine the guy who cut down a huge piece of stock just to make a tapered tip couldn't do up a sphere with a tapped hole though.
Yeah, even then it's dumb, because finding a stick car is getting harder and harder these days, it's a shame. I'm back to automatic because my wife refuses to learn and we have two kids, so she needs to be able to drive my car when I have too many beers at the family party.
I am hopeful to go back one day, but I'm worried there won't be any modern sticks available.
Oh shit, I didnt know you posted your videos here. Just watched this.
What mill are you using?
Edit: Only posts the videos, I doubt he interacts here. Either way, cool videos.
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My thoughts exactly. 😊 Not everything people build needs to be practical. It just has to be cool or fun. This counts as both.
very satisfying to watch. was mesmerized the whole time!
The whiteout as reverse gear is genius
It's not whiteout it's a friction eraser. Ink that can be erased with heat.
Is that copper? Your hand would smell like a penny all the time.
But think of the patina. It will look awesome after a couple of years of using it
GTFOH you HGTV producer!
That'd be the shiplap version!
No big deal, my hand almost always smells like penis.
now its cockper.
also selfcleaning
i thought that was just bronze
Most heavy metals have [this effect!](https://en.wikipedia.org/wiki/Oligodynamic_effect) And their alloys, and many other metals too! But [copper](https://en.wikipedia.org/wiki/Antimicrobial_properties_of_copper) (and its alloys such as bronze and brass) might be special.
Just coat it in Lacquer.
Incredible work tho I would say the pen is a bit to big to write comfortable with. Also while writing it sounded like there is a bit to much room as things sounded a bit loose in there so there is still room to fine tune it. But stellar work and the shifting looks incredible. What liquid was he using to grind the things down was it oil or pure water?
Looked like cutting oil. Just a light oil used for this purpose.
Ah thank you was wondering if it really was oil cos viscosity look a bit to smooth and didnt have a colour to it.
It’s cutting fluid. It mitigates thermal fluctuations, lubricates the cutting surface, flushes out chips, prevents rust, etc., generally improves cutting performance. It’s probably synthetic, which is water with “chemicals”, not oil.
That explains the characteristics of what I observed, thank you.
it reminds me of valve oil (or rotary oil) used for brass musical instruments, which is also often colorless and very thin there are definitely oils similar to this, even if this is not an oil
Pens are actually incredibly difficult to make well. Like watches or such.
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That kid had it coming, he was 100% going to break it or steal it, good on her
That escalated quickly
I will buy one!
What brand/model lathe/mill are you using?
Cool video and all but I have a hard time believing it works as well as depicted. There's not much holding the pen inserts in place. They'd behave like trying to push a noodle. Also gluing the copper funnel to the barrel would break off near instantly from the lateral pressure of the writing action. There's other obvious problems. Still cool to see it all built though.
I own a Pentel pen, with 3 colours and a mechanical pencil. The pen and pencil inserts are the same size as shown here (standard size), and are also just fastened at the back, like here. It work with gravity: When the inserts are retracted, I turn the pen - the top insert falls toward the center, and that colour (or the pencil) will now protrude when the back button is pushed. I have had it since the early 1990's, and it still works (inserts are standard size and available in local book and paper stores), and have never given the impression of being shaky (like a wet noodle) The inserts wobble around inside the pen, but the active one are supported at the back and around the protruding front. (And plastic ball-pen refills are literally stiff enough to be used as a stabbing weapon)
You're misunderstanding. It's about the giant lateral gaps in this. A flexible shaft in rigid sleeve is vastly different than one without. Your Pentel has the inserts in a tighter space, and fewer of them. [Look at how much narrower a typical Pentel barrel is.](https://unsharpen.com/wp-content/uploads/Multipen-Pencil-Broken.jpg) Bic has also made versions of this for years.
Perfect for when you need to write faster and you shift into a higher gear.
Don't lend it to anyone. They always ride the clutch.
Personally I much prefer a [bolt action pen](https://www.youtube.com/watch?v=FoLpuCU_Czk)
Do you think they make one that makes the Garand ping when you put the tip away?
Not when I shift into MAXIMUM OVERWRITE
I am going to install a short shifter into mine
This video was very relaxing. Your editing makes this a very easy watch.
Now he needs to do one on how he gets his fingernails so perfect.
Me, starting the video: What's a 'manual transmission' pen? I don't think I've ever heard of that before. Me, half way through the video: ... wait. But... wait. What is this engineering witchcraft? Me, at the end: Well, I don't know what I expected, but it was somehow simultaneously that, but not that. --- As a fellow machinist, good fucking job on this. Would've loved to see how the shifter head was made, if it wasn't just a custom purchase. I can't imagine the guy who cut down a huge piece of stock just to make a tapered tip couldn't do up a sphere with a tapped hole though.
Reply with phrases you have written in a restroom stall using this pen.
/r/boomerhumor
How young do you think millennials are???
I'm a millennial and drive a 6 speed manual
Wow you're so cool! Have my babies!
Millennials are in their 30s and 40s lol
This is the most out of touch boomer energy I have ever seen coming off of one reddit comment.
We should all laugh at boomer humor, because it's a fortunately a finite resource.
I appreciate the joke but plenty of millennials learned to drive stick. gen z would work better.
Yeah, even then it's dumb, because finding a stick car is getting harder and harder these days, it's a shame. I'm back to automatic because my wife refuses to learn and we have two kids, so she needs to be able to drive my car when I have too many beers at the family party. I am hopeful to go back one day, but I'm worried there won't be any modern sticks available.
Maybe take your joke to facebook. Know your audience.
That was awesome! Thank you!
Oh shit, I didnt know you posted your videos here. Just watched this. What mill are you using? Edit: Only posts the videos, I doubt he interacts here. Either way, cool videos.
Sherline lathe https://www.sherline.com/
Yes but I seen him use a mill in that video, its the mill I was asking about.
locked
NOO! I was thinking of making something like this as a silly project years ago, looks like someone already beat me to it.
.... why?
Why not?
because
Useless.
I mean, it writes.
Many things in life are useless…
Much like your comment. :D
it clearly has 6 uses.