Forgive me if I am wrong, but did you just cheat and use the original springs? Also, how long would it last before it became unusable because the steel was too soft?
Metal is too soft. Use concrete nails. Also, make a tapered transition so that it fits exactly into the tapered negative turned with a drill in the middle of the handle. Since the metal is soft, the shank is flattened and stops normally entering the hole of the striker. The impact force is lost due to friction in the striker channel. You can strengthen the blow by installing a powerful spring behind the striker. And in principle, you can take any spring at the tip. Probably even from a ballpoint pen. Its only purpose is to reload the instrument.
Adding the point to the striker using the hand-held micro-lathe suggested to me that the world would benefit from a C-clamp on which is mounted a hime joint into which you can place sealed bearings of various internal diameters; with the object spinning on its axis in the micro-lathe passing through that sealed bearing, as its forced up against the belt sander's belt, the would-be tip would be largely constrained from moving off-axis, producing a much more precise, symmetrical point. Hell, make several sizes -- with different sizes of C-clamp, different sizes of hime joint, and groups of inserts that allow for the swapping in, and out, of a myriad of different sealed bearings. Bundle them all together in almost-complete-yet-frustratingly-overlapping sets, and sell them in hardware stores at indecent prices... Tools are a contagion.
Thank you very much for opening one of this up, I found this punch for a buddy of mine that pasted away from COVID and 20 years ago he took it apart and couldn't figure it back together so thank you
Man I need to thank you. These are one of the most important time savers I kept on my tool belt, and I can NOT find these anywhere in South Africa, where I now live. Since shipping anything over here costs more expendable income than I can make in a month, it looks like I'm going to have to figure out how to rig one up, and this is the best video on the entire internet on how to do that. Please pat yourself on the back for a job well done, and accept a brother's gratitude.
I enjoyed the video very much; a center punch looks like a simple tool but in fact it’s kinda sophisticated. And I like that you talk us trough the process rather than hearing some random music. Also I find it oddly satisfying to see the metal being turned :)
Thanks to your video, I understood how the automatic needle valve works! Mine, brand new, did not work well, after having disassembled it, nothing made us understand the principle. Now I understand! Thank you for this explanation, I will die even less stupid!
You missed a fundamental feature in the explanation, that causes it to trigger….the front piston does not align with the hole in the hammer due to spring compression. Check inside the barrel and you’ll see a restriction hole just a bit wider than the piston shaft…notice the conical collar half way down the piston shaft? As the piston rises, off centre as you correctly said, when the collar reaches the restriction hole it aligns the piston centrally….and NOW the piston slips into the hammer hole allowing the hammer to snap down. The take away is you need that alignment restrictor in the barrel AND it must be wide enough to allow the piston shaft to sit off centre until that sloped collar fits into the restrictor and centralises the piston. Great video thanks. Although I just purchased a nice Starrett 18C, beast of an auto punch😊 PS: Love your mini lathe👍
I pause the video at 17:50 and as i have seen you have made a pretty good jod by replicating the parts, so i think it's a YES from me it's gonna work 💪👌👍
Thanks for such a great video. My auto centre punch broke not long back and it never crossed my mind to either fix it or make my own. But I will now. Thanks also for the link to the dimensions.
the hammer end has to have a flat side in the whole it will not work correctly thanks for the video it answered a couple of questions for me I hope my info helped as well
Nice work! Some would call it a waste of time since they’re only like $5 but I think it’s cool that you went through the trouble and succeeded! I’d like to see a version of a pull back spring punch! Seems like it’d be easier to do!
It's and interesting and useful project. But I would suggest that you use a harder piece of steel for the prick. Why not try the shank of a spade bit? They're reasonably tough but not brittle.
Thanks for the lesson in reassembly. I bought and took my brass punch apart before I got home and had no idea how to put it back together. I however will save the time and money that would be spent on hospital bills, plus the truck load of credit card debt that lord only knows that has been mounted in the the purchase of all those tools that ultimately made the $6 punch.
The video was fine, I really did not pay any attention to how long it was, it was not long enough to be a big deal. I was just looking to see how cheap those are on banggood and I noticed some of them have a round or roundish knob on the cap you push down on which could be really nice if you have a really strong spring on your punch. They should send you one of their mini lathes to review, they are not the same as the one you have and may not be as good a quality. I really like that knurling tool, it really make whatever you are making look more professionally made and nice, if I had a lathe I would get one of those.Thanks man.
Ya, mine too. Once I learned that that pin in the spring Needed to be off-center, I went into it & play with the Spring, until it was more off-centered, which Helped but still didn't make it work 100% of the time. I'm thinking of grinding the pin heads to round them more, but that's an irreversible change, so.......
Great project! I always wondered exactly how those worked, but never got around to tearing one down. Now I know better... As for the hardness - bolts are hardened by heat treating, so yes, the steel is hardenable. Better bolts = better hardening properties. Grade 0 junk bolts are not very good steel. But it's surely oil-quench grade hardenable steel, not the more expensive water quench grade hardenable steel... But even water quench steel gets more surface hardness if you quench it in oil. Higher surface hardness = less deforming at the tip. Higher through hardness = brittle parts that break on impact (like taps - ever dropped a tap on concrete?). So you want the tips surface-hardened, as well as the surfaces where the 2 pins contact each other and the hammer, but not the length of the pins (too much hardening and they'll break like a tap hitting a concrete floor...). Impact resistance seems to be the key here, not rigidity.
I guess need to find my main spring. I took it apart wondering why it wasn't working and couldn't figure it out. Now how did the spring get lost to begin with?
I think your parts would benefit from using spring passes once in a while in order to keep the forces down on the last bit of any cut you do. It will make for better surface finish and greatly improve your dimensionnal accuracy. Deflection is a 'female dog' when it comes to small parts, best spring the 'defecat matter' out of it!
This ia the machine i would have even it was mini metal milling lathe but i cant afford this machine due lack of funds hope to have sponsor like u so i could have like this machine so i can make more fabrication love lots ka-Metal good work how u make your own metal tapper
for your next project: :) make a wooden rounded knob that screws into the back end, like are found on awls, so one pushes with palm rather than grabbing and squeezing the shaft.
according to my observations,the orifice in the middle housing part and the smooth increase of the diameter of the pin forces the pin back to the center .this causes the pin to move in to the center bore of the hammer suddenly.
Many thanks from CAIRO . EGYPT . Frankly speaking you are professional man , but if l do not have lathe . Can l use some thing else like hard pen ? Or drinking water fitting accessories ?
6:28 btw you could do it better , 1.if you cut the shaft near the chuck first you weaken the part so it bends easily, you can see the effect of a cone. 2.instead of pushing against the rod, a better way it cut against the face so the force doesnt bent the metal as much. 3.if you want to play it safe, dont let the part stick out so much, instead just cut the first half then pull it out and cut the second half. this way the cut is less far away from the chuck. 4. the steel bolts are very soft so i dont use lube, and i use more rpm with less cutting depth which reduces bending again, but i think the first 3 point will be enough for your needs. 6:45 offcourse you can use a dead or revolving center, just cut a small center hole in the face with a centerdrill and it works. 5:00 these chinese holders and tools are a game changer i bought 14pcs for ~5-6$ a piece + all the inserts and holders for ~50$, this would cost a fortune in the past xD (avg the price of 2 minilathes)
yes! it will work lol It's nice to right every now and then :) Thanks for the great video!!! May I ask: where do you buy your drill bits, and what method do you use to sharpen them: free-hand on a regular wheel, on a cup wheel, in a jig on a wheel, with a sharpener like drill Dr. or other? Thank you again!!!
14:58 if you do that with the lathes we have at school you would destroy the whole insert and insert holder that said great video really enjoyed watching it and very interesting to see people make these P.s. why did the metal parts look rounded were the lathe should've left nice straight cuts ... is there play in the crossslide ???
Hello, I really liked your center punch congratulations. I would like to know what the rollers are called to mark the metal.minute 16:30 greetings from Mexico
my first one was in a box of really old tools i got from a garage cleanout, along with some swanson combo squares, and 2 really old 6"starett combo squares, (at the time, i had no idea what they were),so i cleaned all this stuff with laquer thinner and a grey 3m scuff pad we use to blend paint on cars (i can feel all you tool and die guys cringing),so i used this thing for a while to mark drill holes in wood, so one day i pushed really hard and it clicked really loud, so i was like shit i broke it, then i saw one harbor freight , and finally figured out what it was, anyway, i have done nothing to adjust the tools i found and my squares are dead square, i found out the tools i had were made in the 60's, and still dead on, says something for stuff made back then, i don't pass a yard sale now without looking at the old tools, and no, i'm not selling any of it
There's a good chance it will work because you used expensive equipment to make it....similar to that used to make store bought punches...so no big surprise there....Try making one with minimal hand tools only.....
Another great video mate great job And now we know how they work 👍 Love watching channels like yours Inspired me to start sharing my work Think you might like just finished some cool lamps would b amazing if you could check it out let me know what you think 👍 Keep up the great work 😎💯
Goodby fried rice. Hello fried chicken. Time to start making our own tools and stop buying so much cheap Chinese junk......that we modify anyway. I know many choose to support the Chinese economy, but maybe we could dial it back a little. Thank you for the video.
Hope you enjoy the video! Post a comment and let me know what you think.
whats the Ø on the material your using
before u do anything to it and whats the treads Ø
Forgive me if I am wrong, but did you just cheat and use the original springs? Also, how long would it last before it became unusable because the steel was too soft?
I'm pretty sure that it would take at most a few dozen punches on steel for it to become garbage.
Metal is too soft. Use concrete nails. Also, make a tapered transition so that it fits exactly into the tapered negative turned with a drill in the middle of the handle. Since the metal is soft, the shank is flattened and stops normally entering the hole of the striker. The impact force is lost due to friction in the striker channel. You can strengthen the blow by installing a powerful spring behind the striker. And in principle, you can take any spring at the tip. Probably even from a ballpoint pen. Its only purpose is to reload the instrument.
Adding the point to the striker using the hand-held micro-lathe suggested to me that the world would benefit from a C-clamp on which is mounted a hime joint into which you can place sealed bearings of various internal diameters; with the object spinning on its axis in the micro-lathe passing through that sealed bearing, as its forced up against the belt sander's belt, the would-be tip would be largely constrained from moving off-axis, producing a much more precise, symmetrical point.
Hell, make several sizes -- with different sizes of C-clamp, different sizes of hime joint, and groups of inserts that allow for the swapping in, and out, of a myriad of different sealed bearings. Bundle them all together in almost-complete-yet-frustratingly-overlapping sets, and sell them in hardware stores at indecent prices...
Tools are a contagion.
Thank you very much for opening one of this up, I found this punch for a buddy of mine that pasted away from COVID and 20 years ago he took it apart and couldn't figure it back together so thank you
Mine don't reliably work.
I suspect the heads on those pins are Too Flat,
not enough rounded edge.
Man I need to thank you.
These are one of the most important time savers I kept on my tool belt, and I can NOT find these anywhere in South Africa, where I now live. Since shipping anything over here costs more expendable income than I can make in a month, it looks like I'm going to have to figure out how to rig one up, and this is the best video on the entire internet on how to do that. Please pat yourself on the back for a job well done, and accept a brother's gratitude.
Thanks!
One of those tools that once you use it you wonder how you ever managed without it. Really nice job.
it's so satisfiying seeing this level of craftmanship on a piece that looks so simple. Subscribed!
Thanks!
I enjoyed the video very much; a center punch looks like a simple tool but in fact it’s kinda sophisticated.
And I like that you talk us trough the process rather than hearing some random music.
Also I find it oddly satisfying to see the metal being turned :)
Thanks to your video, I understood how the automatic needle valve works! Mine, brand new, did not work well, after having disassembled it, nothing made us understand the principle. Now I understand! Thank you for this explanation, I will die even less stupid!
Thanks for watching!
never knew that's how knurling was done. very cool video, thank you for posting!
Thanks for watching!
He's RIGHT; that was Uber-Cool.
the brass barrel interior is what forces the off center pin to centr on the hammer face & fall into its hole
You missed a fundamental feature in the explanation, that causes it to trigger….the front piston does not align with the hole in the hammer due to spring compression. Check inside the barrel and you’ll see a restriction hole just a bit wider than the piston shaft…notice the conical collar half way down the piston shaft? As the piston rises, off centre as you correctly said, when the collar reaches the restriction hole it aligns the piston centrally….and NOW the piston slips into the hammer hole allowing the hammer to snap down.
The take away is you need that alignment restrictor in the barrel AND it must be wide enough to allow the piston shaft to sit off centre until that sloped collar fits into the restrictor and centralises the piston. Great video thanks. Although I just purchased a nice Starrett 18C, beast of an auto punch😊 PS: Love your mini lathe👍
This was a fantastic video to watch at a higher playback speed; lots of realy good content packed into one sitting
Glad you enjoyed it!
I pause the video at 17:50 and as i have seen you have made a pretty good jod by replicating the parts, so i think it's a YES from me it's gonna work 💪👌👍
Cool, thanks
Beau travail! Félicitation, 👍👍 c'est une jolie réalisation! Bravo👏👏👏
Congratulations, you are very smart. watching here from Brazil.
Thank you! 😃
Amazing tutorial for both lathe and mechanism! I love it.
Thank you very much!
Beautiful job buddy. A tool that gets plenty of use in my workshop.
Thanks 👍
why do i love videos like this just self made stuff always seems better
Thanks for such a great video. My auto centre punch broke not long back and it never crossed my mind to either fix it or make my own. But I will now. Thanks also for the link to the dimensions.
Thanks for watching!
the hammer end has to have a flat side in the whole it will not work correctly thanks for the video it answered a couple of questions for me I hope my info helped as well
Thanks for the info!
Nice work! Some would call it a waste of time since they’re only like $5 but I think it’s cool that you went through the trouble and succeeded! I’d like to see a version of a pull back spring punch! Seems like it’d be easier to do!
Thanks!
Your idea really makes my daily work easier, sir, thank you sir💯💯❤👍🤝🤝🤝🤝🤝🤝
Nice metal work you did!
A simple mechanism,could this principle be up-scaled to function as an impact hand tool to compact rammed earth.
This is very interesting! Just fun I might have a go at making this without the lathe, only using bits and bobs I already have
hands down knew it was gonna work, v well made; ty
Very cool. I always wondered how these work! I wonder if I could fit the mechanism into a fat metal pen?
I was thinking similarly if I could get it fitting in a mechanical pencil
Wow. Amazingly done Sir. Superb and congrats
Thank You!
Great job and explaination. I learned a lot. Thank you
Glad it was helpful!
It's and interesting and useful project. But I would suggest that you use a harder piece of steel for the prick. Why not try the shank of a spade bit? They're reasonably tough but not brittle.
Thanks for the lesson in reassembly. I bought and took my brass punch apart before I got home and had no idea how to put it back together. I however will save the time and money that would be spent on hospital bills, plus the truck load of credit card debt that lord only knows that has been mounted in the the purchase of all those tools that ultimately made the $6 punch.
The video was fine, I really did not pay any attention to how long it was, it was not long enough to be a big deal. I was just looking to see how cheap those are on banggood and I noticed some of them have a round or roundish knob on the cap you push down on which could be really nice if you have a really strong spring on your punch.
They should send you one of their mini lathes to review, they are not the same as the one you have and may not be as good a quality. I really like that knurling tool, it really make whatever you are making look more professionally made and nice, if I had a lathe I would get one of those.Thanks man.
Ok so I got one of those and my doesn’t pop as yours did to put the dent. What is being done wrong if you don’t mind answering.
Ya, mine too.
Once I learned that that pin in the spring Needed to be off-center,
I went into it & play with the Spring, until it was more off-centered, which Helped but still didn't make it work 100% of the time.
I'm thinking of grinding the pin heads to round them more, but that's an irreversible change, so.......
Nice job; I'll do my version of that later
Thanks for watching!
Great project! I always wondered exactly how those worked, but never got around to tearing one down. Now I know better... As for the hardness - bolts are hardened by heat treating, so yes, the steel is hardenable. Better bolts = better hardening properties. Grade 0 junk bolts are not very good steel. But it's surely oil-quench grade hardenable steel, not the more expensive water quench grade hardenable steel... But even water quench steel gets more surface hardness if you quench it in oil. Higher surface hardness = less deforming at the tip. Higher through hardness = brittle parts that break on impact (like taps - ever dropped a tap on concrete?). So you want the tips surface-hardened, as well as the surfaces where the 2 pins contact each other and the hammer, but not the length of the pins (too much hardening and they'll break like a tap hitting a concrete floor...). Impact resistance seems to be the key here, not rigidity.
Great carbide inserts. small chips not long ribbons
I guess need to find my main spring. I took it apart wondering why it wasn't working and couldn't figure it out. Now how did the spring get lost to begin with?
عمل متقن و جميل
تحياتي من سوريا
I’m sorry, I see that you still are making videos. Thank you, keep up the great work 👍🏻👍🏻🙏🏻
I think your parts would benefit from using spring passes once in a while in order to keep the forces down on the last bit of any cut you do. It will make for better surface finish and greatly improve your dimensionnal accuracy. Deflection is a 'female dog' when it comes to small parts, best spring the 'defecat matter' out of it!
Awesome video, always makes me glad to see when you post a new one!
Amazing work. 👍👍👍
Thanks!
Could you have teat treated the tips of the hammer and push? Use oil to quench.
This ia the machine i would have even it was mini metal milling lathe but i cant afford this machine due lack of funds hope to have sponsor like u so i could have like this machine so i can make more fabrication love lots ka-Metal good work how u make your own metal tapper
for your next project: :)
make a wooden rounded knob that screws into the back end, like are found on awls, so one pushes with palm rather than grabbing and squeezing the shaft.
That's a good idea. I'll have to try it.
according to my observations,the orifice in the middle housing part and the smooth increase of the diameter of the pin forces the pin back to the center .this causes the pin to move in to the center bore of the hammer suddenly.
Awesome, thanks from Chile
What is the size of the center hole running through the middle section?
No idea
Many thanks from CAIRO . EGYPT . Frankly speaking you are professional man , but if l do not have lathe . Can l use some thing else like hard pen ? Or drinking water fitting accessories ?
Good to watch. If it was me,(and I had the materials), I would have made a beefier one rather than make a copy of what I already owned.
Thanks for watching!
Yes it will work.
17:49 timestamp
NICE JOB, THANKS FOR SHARE
Thanks for watching!
It's going to work.
YOU CAN USE CONCRETE NAILS FOR PINS
Very Nice job !
Thank you very much!
Use tool steel for the pin and striker.
Good job
Thanks!
Very nice job and yes I think it will work :-) just about to find out
Felicitaciones , muy profesional para trabajar excelente.
6:28 btw you could do it better , 1.if you cut the shaft near the chuck first you weaken the part so it bends easily, you can see the effect of a cone.
2.instead of pushing against the rod, a better way it cut against the face so the force doesnt bent the metal as much.
3.if you want to play it safe, dont let the part stick out so much, instead just cut the first half then pull it out and cut the second half. this way the cut is less far away from the chuck.
4. the steel bolts are very soft so i dont use lube, and i use more rpm with less cutting depth which reduces bending again, but i think the first 3 point will be enough for your needs.
6:45 offcourse you can use a dead or revolving center, just cut a small center hole in the face with a centerdrill and it works.
5:00 these chinese holders and tools are a game changer i bought 14pcs for ~5-6$ a piece + all the inserts and holders for ~50$, this would cost a fortune in the past xD (avg the price of 2 minilathes)
I do think it’ll work!
yes! it will work lol It's nice to right every now and then :) Thanks for the great video!!! May I ask: where do you buy your drill bits, and what method do you use to sharpen them: free-hand on a regular wheel, on a cup wheel, in a jig on a wheel, with a sharpener like drill Dr. or other? Thank you again!!!
I use Dewalt bits from a big box store. They are the best I can get locally. I don't sharpen them. I usually go through one set per year or so.
@@MakingStuff thank you for answering! I think it was in the shop press build, I saw nice, quality chips being produced...nice, long spirals!
👏🏻👏🏻👏🏻👏🏻 nice job
Thank you!! 😁
14:58 if you do that with the lathes we have at school you would destroy the whole insert and insert holder that said great video really enjoyed watching it and very interesting to see people make these
P.s. why did the metal parts look rounded were the lathe should've left nice straight cuts ... is there play in the crossslide ???
A nice fun project but this is reinventing the wheel
Very nice
Hello, I really liked your center punch congratulations.
I would like to know what the rollers are called to mark the metal.minute 16:30
greetings from Mexico
It's called a knurling tool. amzn.to/2IpxCXq
Muy profesional el trabajo.
Вы большой молодец 😎😊👍🏻👍🏻👍🏻
I noticed you were turning from left to right. It's supposed to be from right to left, with the bulk of the metal coming out from the chuck.
Me dan anciedad los anuncios y pierdo concentración. Para q ponerlos, si ya estamos adictos
my first one was in a box of really old tools i got from a garage cleanout, along with some swanson combo squares, and 2 really old 6"starett combo squares, (at the time, i had no idea what they were),so i cleaned all this stuff with laquer thinner and a grey 3m scuff pad we use to blend paint on cars (i can feel all you tool and die guys cringing),so i used this thing for a while to mark drill holes in wood, so one day i pushed really hard and it clicked really loud, so i was like shit i broke it, then i saw one harbor freight , and finally figured out what it was, anyway, i have done nothing to adjust the tools i found and my squares are dead square, i found out the tools i had were made in the 60's, and still dead on, says something for stuff made back then, i don't pass a yard sale now without looking at the old tools, and no, i'm not selling any of it
Nice job 👍 ! A+
Thank you! 👍
nice work but it need lathe machine to do it it will be very nice if doit with simple tools
the chineese onen that i got from amazon gets stuck most of the time..
Super Great
There's a good chance it will work because you used expensive equipment to make it....similar to that used to make store bought punches...so no big surprise there....Try making one with minimal hand tools only.....
At 9:25 you'd have got a more central hole if you'd used... a center punch.
14:56 ups😊
WOW!
Yea
BTW, really nice job, it looks great, and works, i still need to get a laithe
I want to buy it ,send contact
They cost like $10 for 2 on Amazon.
Is it really worth wasting all that time making one.
Why didn’t you just MAKE the tool holder part that you needed?
Exelent😅😅😅
Thanks 😅
OK👍👍👍감사합니다
If something requires a LATHE I don't think you can call it "D.I.Y"
LOL!
I believe, the original was fabricated by Starrett ...
Another great video mate great job
And now we know how they work 👍
Love watching channels like yours
Inspired me to start sharing my work
Think you might like just finished some cool lamps would b amazing if you could check it out let me know what you think 👍
Keep up the great work 😎💯
no ,i think it won't work
let me see ...
Great for breaking into piggies car
waw, some of the dimensions are in mm (metric) 😮, this will confuse americans. well, half-way there.
Like
Goodby fried rice. Hello fried chicken.
Time to start making our own tools and stop buying so much cheap Chinese junk......that we modify anyway.
I know many choose to support the Chinese economy, but maybe we could dial it back a little.
Thank you for the video.
Come on man get real you would have assembled that punch off-camera to be sure that you did not stuff up.
So it's not a center punch, it's an off-center punch.
Only on the inside :)
It's nice that you can duplicate it but I payed $2 for mine and I'd pay it again if it broke. Cool the way you made it though
Yeah it's definitely not a save money project. Just something fun to do.
Lol about $1000 tools and +5 hours of labour just to make a $15 tool from Amazon/ebay....
It's actually only about $500 worth of tools but the knowledge and fun the project provided was priceless.
@@MakingStuff you know what, that’s totally true. Thanks for replaying back to me. Keep doing what you’re doing mate, you’ve got a sub!
Mo
a diy person does not have a lathe