Amazing device to cut metal with high precision

Plan / Templates - jisaku-koubou.com/downloads/p...
I made a semi-automatic grinder cutter.
When the switch is turned on, the motor rotates to move the grinder, and when the disconnection is completed, the movement stops.
For safety, the grinder body is turned on and off manually.
In addition, since the grinder body can be easily attached and detached, it can be used as it is as a hand tool.

[@mohammadgholizadeh9737]

No music makes your videos more enjoyable. Thank you.

[@1972C182]

I love that you do not add in any background music. Thank you for excellent quality audio of the natural sounds.

[@australianbloke3934]

I don't know how, but the You Tube algorithm suggested your channel today. I could not stop watching your effortless mastery. Outstanding work. Unlike my messy workshop that I work in every day, yours looks so clean and meticulously organised. Looking forward to watching more of your projects.

[@adamkelly2256]

30 seconds into the video, when I saw the self-made, wooden drill press, I subscribed. The video only kept getting better and better. Bravo!

[@therarebreeds77therarebree7]

I like everything you have done. As a welder and a machinist, I can appreciate your style of work. It is all very clean and neat. The kill switch really killed me! Very clever.

[@jimviau327]

What a nice build ! Add a toggle relais to stop the grinder when reaching end of travel. Nice job, love it.

[@bobweiram6321]

Wow! Awesome build! It's a very versatile tool. A router or rotary tool mounted on the carriage can perform linear milling operations such as slots and grooves. By replacing carriage motor with a stepper or servo motor and a controller, it can become a simple programmable saw/mill/grinder. There's a lot of possibilities with this design!

[@fanman421]

Thanks for the demo on tapping the threads in the end holes of the aluminum extrusion. Will use that for the CNC router I am building.

[@markhedquist9597]

Quite excellent! Another impeccable build from you. Thank you, as always, for sharing your expertise with use. Those of us who work with these type of materials can really appreciate the design and build process, as well as the end result and functionality of this machine. The cut quality, precision, accuracy, and repeatability all adds to the enjoyment of using said machine. Thanks again. Greetings from USA!

[@damasogil142]

Yo quiero esos sistemas

[@darkfactory8082]

After a couple of years watching your builds, I still have goosebumps by your working style. It's almost like in the antiseptic room compared to most messy workshops. Also the sterile silence is really chilling. Yet you have excelent ideas for mastepieces and build with incredible precision even with wood.. This machine is something extremely nice. Hats down to you any time. =)

[@user-mc6ew4jo2g]

А мне интересно отчего у тебя мурашки?! Где и для чего это можно применить? Просто бесполезная игрушка

[@darkfactory8082]

I got goosebumps because of the way he works and the clean shop he has.. I would absolutely say it's not a useless toy, but an exremely useful thing, if you need some smaller precise cut pieces, especially if you have a "contained" space workshop. Anyway, depends on what are you using it for.@@user-mc6ew4jo2g

[@goodie2shoes]

I'm a total f'ing mess compared to him/her

[@Clemens878]

As always, top notch quality! I'm very keen to see a DIY tablesaw by your standards.

[@willymustang3562]

It is so satisfying watching you creating all these pieces with such great finishing. Another masterpiece in your sheer endless list.💪👍

[@kevinchallenger1218]

Nice. I built something very similar to cut thin stainless steel strips. I also used a mini "chop saw" frame mounted onto the slide to be able to raise the blade up and down.

[@tu_alum5619]

Love these videos - my hat is off to anyone who can make a working ornithopter (see the home page). If you are considering using this design, my only recommendation would be to make sure that the grinder rpm does not exceed the blade maximum rpm. Many grinders will run unloaded at 8000 to 9000 rpm, while many metal cutting circular blades are labeled for 4800 to 5000 rpm max. Abrasive grinding and cutting wheels are made for the higher speeds, but metal sawing blades, not so much.

[@cuckingfunt9353]

I thought the same. Never been keen on metal cutting blades they can crash and at that speed I wouldn't want to crash ... Dewalt have a diamond metal slicing blade now, they last quite a while cutting soft metals and keep their dimensions (don't wear down).

[@electrolove9538]

I wonder often you need to replace the end clamping rail since its being cut each time?

[@antonalv4562]

Main problem is that diferent speed is needed for the diferent materials. Disk or material will burn if disk is too speedy.

[@mikeroth5536]

I would be looking for scrap to cut just to watch it work with a big smile on my face after building this. YOU sir, are awesome! I love the ingenuity, the craftsmanship and attention to detail such as the heat shrink for protection, the limit switches and the removable drivetrain cover. I’m totally copying some of your projects. 👍

[@fedeaecheAhotmailcom]

hola, saludos, con la mejor onda, no lo copies, comprale el plano. la plantilla.

[@paulweston8184]

"Scrap metal" lol. The entire thing is made out of extruded aluminum. There is nothing in this project that is scrap. "watch it work with a big smile on my face" lol. You sir sound like you'd have trouble getting this to work even if you bought a kit with precut lengths and predrilled holes. lol

[@outstanding1448]

@@paulweston8184, he meant that he wants scrap to cut just to see it works, but you're malfunctioning.

[@freundderuc9146]

clean, robust and straight forward design. Smart engineering ! As a small improvement, I suggest replacing the limit switches by "n.o." switches in series to drive an ac-switch for the grinder. The grinder-motor would also stop.

[@marcoknives]

And the second end-stop should move the grinder back to start position (two relais should do the trick).

[@freundderuc9146]

@@marcoknives it is not wise to return the tool through the material, especially if the rotation decreases with contact to the cutting surface

[@bobweiram6321]

With a controller and a servo or stepper motor and replacing the grinder with a router, it can become a single axis CNC to perform simple and accurate milling and cutting operations. By adding Z axis stage with router, it can mill slots and drill holes. While not as capable as a 3-axis CNC, it can be just enough CNC to perform most operations needed in a typical shop without all the complex programming and structural rigidity required for a 3-axis CNC.

[@pjhalchemy]

To me also adding an OA E-Stop would be good in case something goes haywire.

[@AJMansfield1]

You showed wiring the dpdt switch in a plain polarity reversal configuration, but you can integrate the endstop switches into those cross wires to make it so having one endstop pressed doesn't prevent driving the motor in the opposite direction to clear it.

[@AngelLameda]

Excellent work, very good materials. I have always admired the precision of your designs.

[@DavidJNowak]

What a great example of how an expert tool and die maker crafted a precision machine out of everyday materials available through aluminum extrusion vendors and commonly available hardware items. What a great mind and skilled hands of a craftsman! I would hope that youth could study under you and learn your craft.

[@fredstein5429]

no other maker on youtube amazes me more than this maker.. another brilliant and beautiful project- the only thing that could make this project even better, IMO, would be a glass top on that little magnet box that engages the drive shaft.. btw, is there a proper term for that mechanism, is there any engineer watching this that could enlighten me? thank you JSK!

[@ramachandran8666]

Very ingenious and innovative design with the precision build. You have evolved from rather simple yet useful shop tools to now rather more elaborate yet useful machines for the DIY shop. I am sure me as well as your viewers/supporters will appreciate the list of parts you have used in this as many items are either unfamiliar or not easily sourced in many countries outside of places like Japan, North America or EU. Greetings fromRama in USA

[@stormkhan4250]

Agree. A quick release nut mechanism should be used for operator convenience. Without one it would mean having to run the lead screw in reverse to move the drive nut back to a useful position every time you use it. A 'simple' way to do it would be to cut that nut in half and implement a 'half nut' mechanism like a lot of lathes do.

[@feamorx86]

Man! You're doing really cool! I watch the video, sometimes I want to suggest. Here you forgot ... But ... A minute later, it turns out that you have not forgotten anything. Vice versa! Made it even better! This is great! It would be even better if the machine had the ability to change the height along the Z axis.Not automatically, but also without unscrewing a few blots (and knocking out the settings). As a simple example. For example, side stops on both sides (real guides are too difficult) and a small metric hairpin (long bolt M6) on 2 bearings on the other. Make large nuts. He unscrewed the nuts - loosened the "carriage" with the grinder, turned the z-axis, tightened the nuts. Ready! Surface grinding machine from scratch)))

[@user-np1gp7yj9f]

Я думаю, что для настоящего шлифовального круга у станка недостаточно жесткости. При малой жесткости системы высокие скорости приводят к вибрациям, уменьшающим точность, класс шероховатости обрабатываемой поверхности, увеличивающим износ круга. Круг может разбиться. Это опасно.

[@davidgutting4317]

I love the hard work that goes into these tool projects, consider cutting the nut that pulls the sled and making a split nut connection (like lathes use) so you don’t have to spin the nut back. Then you can move the nut with the saw and clamp it back on when your in position. Nice tool

[@Itsdirtnaptime]

This specific idea could be modified for other purposes in the general workshop for the average person who watches these kind of videos. Nothing less than spectacular for this channel.

[@gtech7577]

These guys hands always look like they never worked in a workshop ever. Great skill bro!

[@briansmith1042]

I think it’s a woman

[@rsz90182]

Have you worked in a workshop yourself? You would know that women also work in workshops.

[@aserta]

You have way more trust in that housing than i would've had. :)) It's really annoying that manufacturers have stopped putting those handles at 90 degrees from the body, and it really doesn't give that much more control to be worth it. My old 80's Black&Deckers all have 90 handles and they work great, especially because i can bracket them without much hassle.

[@talegunner115]

You sir are unreal (in a very good way). This is outstanding. I am so impressed with your work. Great job. This is better than you can purchase in a store. That is so precise.

[@jefftruck]

A true masterpiece! I have no need for such a device, but I watched the whole video just to watch your meticulous design and build process.

[@tatjoni]

A beautiful, elegant and well executed solution to a problem that doesn't exist.

[@anandarochisha]

Sorry, but He is going to rub your face in the callousness of your comment over the next umpteen projects, whereby this is the tool that he uses to show us what we can make with our own two hands...and a little of his borrowed ingenuity.

[@ironsandhammers359]

You ever worked with cutting metal (accurately) before?

[@KawaiiArcadeMasters]

Thanks for the upload👍🏻 How you come up with the ideas are amazing.

[@RestoredChannel]

This is my favourite build so far. Fantastic work👌

[@nonamewhorehey7174]

I could watch videos like this for days on in without breaks, thats how awesome this was!!!!!!!! Amazing work and craftsmanship sir!!!!! Thank you for posting and such awesomeness!!!!!!

[@cristiandelavina2703]

I really don't know if there is a word in Japanese to define the accuracy and neatness of your work, you are impeccable. nice to see you work.

[@devinmoodley4061]

There is... the word is "JSK koubou"

[@anshulbhardwaj4038]

Accuracy and neatness is costly and time consuming Hence things are produced in bulk and with tolerance Quantity has a quality in itself That's why Germans lost to Russians And Americans lost to vieatnemis

[@nerop]

Looks great. I Would be very interested to know approximate total cost of the materials involved (extrusions, motor, electronics, etc).

[@wizrom3046]

Excellent design! Elegant! A suggestion; add a latch-on/dropout relay to auto turn off the cutter.

[@valdius85]

Just watching your work is amazing, especially the accuracy.

[@nagamendo5655]

I love it! It is totally overengineered (there is no need for the driving motor, the grinder can be moved by hand just as well), but I love it. It is so nerdy. I should really build one myself just for the fun of watching it cutting by itself. 🤩😆😄 Thumb up from me. 👍 5 star project! ⭐️⭐️⭐️⭐️⭐️ And did I alreadz mention that I love it? 😜 Thx 4 sharing. Greetings from Switzerland 🇨🇭

[@Frank_inSA]

At least someone who can think... Nice work, nice hobby, but the machine is basically useless 😎 But yes, the guy knows his stuff...

[@moczikgabor]

@@Frank_inSA Why it useless? And why the is useless? If you want precise cuts, both the fixture part and the feeding part guarantees consistent results, not to mention the cases when you have to cut in series.

[@bentindale7533]

Nobody in industry would regard this as 'high' precision. Any milling machine built in the last 100 years would accomplish this task.

[@madsighntist14]

THANK YOU! i absolutely admire your work! I am 71 years old, I have "made tools" (and other things), All my life, and YOU Amaze me!. I now do SMALLER work in metals, of brass, bronze, and Aluminum, woods of various species, and I will adapt this idea, using a PROXXON 90 degree grinder and smaller blades, for my SMALLER work space! My gratitude for your Excellent FINE WORK! As a retired Wood Floor worker, I used to "cut to fit" my woods around rough Rock Fire place hearths, You remind me f that DEDICATION, to Accuracy! philip, in the Great Pacific North WET (much rain) in OREGON, USA.

[@elnoey]

Outstanding! Love it. I used to able to do that until I changed direction and moved to an area with very little manufacturing. I had to start over. I'm not sure how he designed it and where is the blueprint he is following to create the tool. Very creative, love it!

[@noodlesiis]

I’d like to know how he marks out things so accurately like the bearing blocks to the flat alu plate at the beginning of the video they never line up perfectly when i try.. Also what stepper motors does her use etc? output and power supply wise … ? Great work imo..

[@CiberWizZ]

Great work! What is the material you made the belts of?

[@Bob_Adkins]

It's like a metal cutting horizontal panel saw with power feed. Beautifully done!

[@TotleStarwind]

Whenever I see your videos everything looks easy even though I know I am not yet skilled enough to do this as perfectly as yours.

[@markkoons7488]

I watch your videos at 2 X speed. They are a real pleasure. Is there some US online source for the parts you used for this build?

[@Produkt_R]

This guy would be able to build a Boeing in his workshop.

[@foodiescomfortcorner2387]

True that😂😂😂

[@MRBuuuzshiiddoo]

I think rocket also can

[@arjunkushwaha4146]

😂😂😂

[@ohcrapitsmrG]

Probably better quality given how boeing been under fire for bad quality

[@abdouhaceb1766]

I agree

[@noweare1]

You make me want to clean up my workshop. Thank you for showing. I will be using some of your techniques.

[@cayumanqui]

Very high level of metal assembling and accuracy. Congratulations.

[@jisakukobo]

グラインダーにチップソーを装着し、可能な限り安全に切断できる治具ができないものかと思い開発してみました。 ご意見お待ちしています。 I attached a tip saw to the grinder and developed it with the idea of creating a jig that can cut as safely as possible. I would like to hear your opinion.

[@MRBuuuzshiiddoo]

You extend the blade diameter as well which cannot be done with hands

[@KeithOlson]

Another impressive angle grinder build. Bravo! One thing that might help make it safer and more efficient would be to use a belt to move the angle grinder instead of a threaded rod. With a threaded rod, the blade is being forced along at a set rate which could be too high for a given material or too low, which wastes time. With a belt, you could have an idler wheel on a sprung arm to maintain a certain amount of tension. If the motor is pulling the belt faster than the blade can move through the material, the tension on the belt will increase, making the spring on the idler wheel assembly compress. If you have a voltage controller attached to the idler wheel assembly that changes the voltage sent to the motor depending on how much the spring is compressed, then, when the feed rate is too high, the motor will automatically slow down, speeding up again as tension is released. ideally, it will fluctuate around a feed rate that matches the speed at which the blade can remove material. (If the speed doesn't change during a cut, you know that you can safely increase the motor speed. ...in theory, anyway.) Does that make sense?

[@pedrocoloniamata4396]

Áqá

[@ronwhittaker6317]

the courde you made the pully belt with where did you source it?

[@mellis966]

This is fantastic and can be mounted vertically like your other saw. I have a 12" chop saw and it is just too huge. This configuration can be used for many things. With a little bit of Arduino work you could set it up to cut an exact width. The grinder could be replaced with a drill and holes could be drilled from 3D geometry. This would save time and add precision. All that would be needed is a sacrifical plank locked into place. ... This project is a 100% in my view! Thanks!

[@sddiymakeitworthit7512]

Your creative is another level congratulations 👍

[@homemadetools]

Beautiful work as always. We shared this video on our homemade tools forum yesterday :)

[@josejmourente]

JSK-koubou, excelente trabajo como siempre, de los mejores profesionales que he visto, felicidades

[@Tibrovich]

Вот талантище ,смотрю и не перестаю удивляться ,браво 👏👏👏

[@user-ry1md7dq5k]

Да, уж! Всё у него аккуратно и красиво! А тут, если слепишь какую самоделку из хлама, вроде работает, но показывать её стрёмно.

[@Tibrovich]

@@user-ry1md7dq5k ,что бы как у него было нужно просто душу вложить,даже если из того что есть.

[@user-gm4hg7nw4l]

@@Tibrovich душа не поможет ты посчитай по бабкам сколько стоит его самоделка... там душу продать придётся с нашими доходами то

[@Tibrovich]

@@user-gm4hg7nw4l Внимательно прочти комментарий Олега ,потом мой 😜комент .

[@bikalimark]

thumbnail: some heavy duty milling machine looking thing. start of the video: chunk of aluminium... oh my god

[@Orionrobots]

Really nice build. I'd probably use a GT2 timing belt instead of the rubber tube - but then I generally look at these from a computer control perspective. I love it!

[@user-np1gp7yj9f]

Резиновая трубка предохранит станок от поломки лучше, чем ремень ГРМ GT2 в случае, когда пила не сможет резать металл на такой скорости.

[@Orionrobots]

@@user-np1gp7yj9f Fair comment - hadn't thought of it that way.

[@dcw56]

You do a very nice job of building and you never get dirty! Good video for ideas. The chassis of this machine would make a good start for a CNC router, too.

[@vanassmeister]

It is necessary to use a thread lock, otherwise the screws will loosen from vibration

[@ruslanmukhametianov4069]

Как всегда очень круто! Аккуратно, красиво и чисто!

[@viorsa8200]

Excelente proyecto muy bien desarrollado y mejor ejecutado , usted es ingeniero y su aficcion la carpintería , un trabajo impecable y muy profesional, con una increíble precisión de milésimas , gracias por compartir tanta creatividad y conocimientos , un saludo cordial y por supuesto un gran like desde Narón , Galicia ( España ) 🤓 😜

[@stumcconnel]

Genius! Your work is so neat and accurate, love it.

[@85hako49]

こりゃまた凄いのを設計しましたね。 床タイル屋さんとか使うとよいですね。

[@KingMinhvuong]

Very nice idea. Good work!

[@mpetersen6]

Finally somebody on KZbin who has figured out how to use a dial/digital caliper for foung layout work. To be accurate just reduce the measurement by 50% of the scribed line.

[@Tonicwine999]

No way - In the first few seconds of the video you marked with the top of the vernier callipers - I had no idea this could be done. Been using verniers for about 25 years and never knew this!!

[@PapaFlammy69]

That is so damn cool, very nice! =)

[@dylpickle8147]

Nice

[@jisakukobo]

I hope you will share my videos with your friends!

[@francisamoah-boadu9877]

Please how much will it cost me to make one for me?

[@maxpayne7672]

Кастрация не плохая , я её упростил бы, ещё сделал так что балгарка под 45 градусов резала бы

[@BITTYBOY121]

Fabulous project, Very useful addition to your workshop ! - Well Done - Best Regards and much respect from England 👍

[@TimoBirnschein]

Great build! Thank you very much for sharing!

[@user-jb5yh6um8q]

Круто! Вот к чему цивилизованные страны стремятся, в отличие от некоторых! Браво.

[@user-sk6et1sx4d]

В чём цивилизованность? И в чём точность?

[@bobpurcell5662]

Great design and meticulous build-thanks!

[@sdx1969]

Lovely idea and awesome tool, specially the added movement speed controller. Having said that, I don't believe the purpose justifies the overall built with the associated cost. Maybe the idea can inspire other application ? 🤔🤔 Excellent video mate, appreciate it.

[@olligator22]

I have no idea what I just watched but, is was one of the most fascinating 24 mins. I have spent in quite a while!!

[@IntenseGrid]

Watching such innovation, precision and cleandliness really is quite pleasing! Thanks for the video.

[@laurenarndt464]

I built something related to your device about 2 years ago. From an engineering perspective, the only thing I am critical of is how you secured your grinder. I don't think it's secure enough. I know you wanted a design that you could make vertical adjustments to blade, but at what cost? I have a feeling if you had to make this video build all over again, you would do something much different just as I have done. To secure the grinder on my tool I used a large aluminum locking clamp (62 mm ?) and two bolts where both the handle could thread into. Essentially, I made a three point design that's quite solid with little deflection. If the metal piece that you are cutting were to accidentally jam the blade, I think you'll find your weak points rather quickly. You're very clever, and I like your designs.

[@smbd2010]

An excellent project and excellent build. One suggestion: if you added two small diodes (1N4004 or similar) you could make the end stops direction sensitive. So when at one end stop, it would still run in the opposite direction. If a cct diagram would make it clearer let me know...

[@patw999]

That is great!! You are one of those really smart guys but what I like is that you are willing to share. Everything you build blows my mind. Thank you for being willing to share with us, I greatly appreciate it. I am horrible when it comes to electrical stuff. One time I changed out about 8 electrical plug in panels in my house, Somehow I accidentally mixed up two wires and turned about half of our house from 110 volts to 220 volts. Burmed out a computer, shower fan, bunch of lamps in the bathroom blew out. Took me hours to find my mistake. Not to mention how much time I spent in the attic replacing the shower fan. LMAO.

[@gyrogearloose1345]

Thank you JSK ! So ingenious, so cool !

[@pauljarine]

I love this channel. Thank you for making these extremely helpful videos. Would you have to re-measure and re-adjust every blade change? Thank you.

[@tonycollins1729]

With every new video you put out, you out do your self. Just amazing skill you have.

[@justingarthwaite4237]

Nice work.. your a brill engineer.. gob smacked with your ability to make brilliant machines .. defo food for thought. Thanks

[@paoloconcari2609]

A very good idea... but it will be better if the drill could back rear with electrical system and non manually. In any case Tank you for existing Jisaku. YOU ARE MY HERO.

[@iratozer9622]

You sir, are an amazing engineer. Quite beautiful and well thought out. Many happy projects in the future.

[@vizionthing]

When engineering is this beautiful it becomes art.

[@leonardogarabitolopez7606]

Sensacional! Un Lego a otro nivel para Adultos....... Gracias por la ilustración.

[@maxon49]

Very good!! Add a protractor, you can cut at a specific angle (such as 45 degrees).

[@mrohny76]

fantastyczny projekt 👍👍👍

[@rodandakiko2187]

Great video. Nice design and workmanship. Great for cutting a range of materials. Just 1 point. I would be a bit concerned with the angle grinder speed when cutting certain steels. Generally the harder the material, the slower cutting speed. Would be good if there was a way to have a variable speed for the cutting.

[@eddietowers5595]

For a wood worker you're a great machinist. Awesome idea.

[@gr8ful101]

Your work is very influential. Thanks for sharing. God bless🙏🏽🙏🏽🙏🏽

[@davidrichards3605]

A really nice clever little machine, very well made and thought out.

[@mobazou]

プーリーのベルトを自作する方法にも驚きましたが、磁石での位置飛ばしに加え、最後の手持ちでのグラインダー利用のための仕組み、加工のための様々な治具に関心するとともに、 そもそもが正確な位置への穴あけをいとも簡単にやってられることが驚愕ですね。 やりたいことを全てシステムに盛り込める才能への尊敬を隠せません。

[@NickSpirov]

The precision of you work is amazing.

[@m.santos1520]

You have an extraordinary ability to build amazing things! I’m wondering what you do with all those great jigs and stuff you have built during all this time. You should have a museum of amazing artifacts!

[@acanadianwoodworker]

I wonder that too, we get a new jig almost every week. I image a massive pile of jigs in a back room somewhere

[@djjinerson]

Man! you come up with some ingenious workarounds, and creative Jigs. I have, and intend to duplicate a lot of what you've shown...save me a boatload of money $$$$ Thank you!!!

[@josea.hernandez9821]

Great work!! thank you for sharing your knowledge and passion with us...

[@antitheist9976]

Fantastic piece of work, one hell of a machine and you make it seem so effortless, outstanding 🙂💯

[@floriangarreau]

like usual very accurate skills to ending a nice tools ! Really impressive !

[@tonyedward6909]

If the world suffers a catastrophic event I would hope this man is alive to rebuild it.

[@mellis966]

If it fits your plan can you do a spray booth and a powder coating oven. Something where you can hang the parts spray them and slide them into an oven for baking. That would be fantastic! It would let you powder coat your parts after you have sand blasted them. Cool factor 10!

[@AugustoDiaz-rz4vg]

Magnificent, brilliant and clean execution, it's a pity that the lack of verbal or written communication tarnish his masterful work.