ELECTRICAL DISCHARGE MACHINING EDM, MARC LECUYER

This video introduces the novice machinist to electrical discharge machining often referred to as EDM. Electrical discharge machining is not generally used by novice machinists but learning the basics of the process can help to impress a future employer or bring someone to farm out certain operations to a specialized shop because they would understand that this technique could help in completing and important part. Thatlazymachinist Marc L'Ecuyer

[@terryisaac8195]

I hope you are using some sort of breathing protection when you are cutting the carbon electrodes.

[@THATLAZYMACHINIST]

Hi Terry, You are very right to mention that. Yes I do use protection and I should have mentioned it in the video. I will pin your comment to the start of the comments section so others can benefit. Thanks for writing and for taking the time to write. Marc

[@terryisaac8195]

Thanks for the comment, Marc. Nice video and explanation of EDM machining. Before viewing it I knew nothing about EDM accept for its three initials 😁; now I'm much better informed. It's seems sorta like focused ultra-sonic cleaning that is ramped up on steroids!

[@joediverfl]

THANK YOU!! I just heard about EDM realizing it's not just electronic dance music🤩 Yours was far and away the best video on it I found after searching for an hour. Absolutely fascinating process and your video was spot on. Clear, concise, to the point, and covered enough that I think I have enough to go on to speak knowledgly about it. I have seen easily 40 small shops auctioned off every week for almost a year now. I was going to start a surplus business, but I realized I don't want to be a part of helping people lose jobs and businesses they have run for 30 years. I LOVE Everything about metalworking, but have never touched more than a hacksaw. I built 2 very successful businesses in industries I had no interest in, retired by 37, but lost everything in the recession. I have a crazy idea to create a business that I think can help these small guys who never upgraded, and just want to retire, but won't get anything if they auction or try to sell with a broker who will take 12% cash up front out of the deal. EDM could be one part that I missed. Thank you again for the video, and I love your website. It's going to be an incredible resource for me. When you come down here to south Florida for the winter, I would love to meet you. My Dad was born on Windsor, and we have a cabin near North Bay, Ontario. Thanks again, Joe Pare'

[@branitelj91]

@@THATLAZYMACHINIST was that carbon of graphite made electrode ??

[@ksemi02]

@@joediverfl lol that’s too funny! I started working with EDM over a year ago, and I still think of electric dance music! Some the older guys at work just don’t get it.

[@TangentJim]

You did a great job -- EDM is an area not widely covered on machining channels . Home Machinist should appreciate your video.

[@RinksRides]

I do. :D

[@Herre87]

I am a dentist, and some of our endodontic files are EDM. That's why I´m here, and even my self understand this process. Thank you very much sir!

[@clubdjmarcus]

I just love it when machines go all the way up to 11... that means it made by people who mean business, and who have a sense of humor. As an experienced machinist I still enjoy your videos and sometimes still learn something new or different, keep it up

[@chemicalcorrosion]

YES!!! I was just going to comment on that! Nice observation.

[@CaskStrength777]

I thought I was the only one who noticed that. Power going to 11 someone definitely had a sense of humor

[@revtmyers1]

Many years ago I was able to work at a machine shop and they had a wire EDM. I never got to see it run but the machining abilities were amazing at the time when I saw some of the examples it produced. I appreciate seeing the mechanics behind that as you presented them.

[@Doug_Edwards]

Thanks Marc, my first introduction to EDM. Heard of It, but never saw the details. Thanks

[@user-fm6ny3uo2b]

Watched a video of a large broken tap being removed with an EDM. Thank you for the clear and concise explanation of this process.

[@xavierdequaire5375]

You are providing great pedagogy and also high quality illustration. Thank you very much for the time and efforts you have dedicated this great teaching! I enjoyed it very much :-)

[@MohammadAbouBasha]

I like your style of teaching, speaking slowly and clearly, and giving the accurate pieces of information. Thumps up!

[@donmittlestaedt1117]

Keep teaching. Our society needs these skills and those that perform them.

[@chuckphilpot7756]

And yet that society only wants to pay them 12 dollars an hour, and we wonder why the country is failing.

[@chuckphilpot7756]

@@abdullahwisimulacha4770 yeah, no. Western society was founded upon false hope. They were in control long before America

[@huckleberrysundry]

This is one of the best channels on KZbin. Nicely done.

[@keithhowell]

Have anyone said when machining graphite use a shop vac to suck up the airborne graphite dust. when we machine graphite electrodes, that is what our machinist do to keep from breathing the dust. I operate commercial edm machines. you have done a very good job in showing EDM.

[@michaelmartinez1345]

This was very good. It shows an alternative method of machining through hardened steel and any other materials that conduct electricity. Zero warpage, no loss of material tempering, no heat damage of any type was done with this process... Nice!!!

[@robbiejames1540]

Well, a disadvantage of edm is that just near where the sparks were, there is a heat affected zone which changes material properties a bit :(

[@michaelmartinez1345]

, @Robbie James, That might be true with the metals that have low critical temp. / heat affected zones, like aluminum (475° F) . But the female thread can still be repaired in several cases, with a thread repair insert, and the EDM could remove the broken pieces , without significant collateral damage, that is often associated with schlock techniques... So EDM is STILL necessary to do ANY kind of repairs to the threaded castings made of most types of metal that conduct electricity, and then saving the castings from being scrapped... Therefore , EDM STILL has the distinct advantage of removing stuck - tooling/fasteners the best way known, to get the machines working again, at MINIMAL expense... BTW, because the EDM process uses liquids like soluble oil and water mix to help disintegrate the stuck pieces, the water also COOLS the surrounding metals from becoming affected by high heat, and thus localizing the intense heat to the parts being disintegrated... EDM is DEFINITELY the best way to remove stuck fasteners and tooling from hard to find / expensive pieces...

[@CaskStrength777]

Nice to see a good serious runthrough with an older style EDM and older 3R style holder. I started on EDM on modern Swiss Agie Charmilles machines that generate their own settings with touchscreen interface- wondered how the older ones I had seen before worked. I heard the oldest had mechanical orbiter mechanisms...cant even imagine what it was like to run those

[@camillosteuss]

Brother, if you want to see one, you can check my latest upload... I just saved one that is nearly new-old stock grade from being tossed to scrappers for pennies a pound... You wont see me use her for quite a while, as i have to build a new shop to actually house all the machinery that i hoarded in anticipation of a proper shop, thereby crowding what was my current shop to point where I have 11 machines waiting a maintenance or a large service or even a full restoration... I know that i`m 4 years late to the party, but 4 years ago i had just a few machines and never intended on having and EDM machine... 2 days ago, i was tossed one into my lap essentially, and i`m referring precisely to the Granddaddy Charmilles D1T orbital sinker, which i intend on running both as an EDM sinker but also as a Jig grinder, as all the dust can easily be contained with a separate oil tank that will keep all the dust inert and harmless to any machine, thus not harming the machine in any way... She has 2 micron dials and a 1 micron DRO, so it would be ridiculous to fail to utilize the full potential of a machine capable of containing grit like no grinder or dust vacuum ever could... In the end, whether its ultra hard mould steel particles that EDM generates or abrasive dust from grinding, both are extremely abrasive and are nearly identical in regards to being harmful to machines if not perfectly contained... Even the Moore Jig grinders can`t boast about that ability... Neither can Hauser ones... The machines you are referring to are literally out of this world in regards to their quality... It`s little wonder that Charmilles still exists today, even tho in a marriage with Agie... I know this is kind of a shameless plugging of my own video, but really, it`s not, this is a 5yo video and a 4yo comment, so who else could see this reply if you don`t check it out... It`s a personal communication as i would like to hear more from you if you know anything about the D1T... I`ve got all the books, but they seem to be unicorn grade machines... And i want you to see one if you never have seen them... They really are works of art... All the best and kindest regards! Steuss

[@askquestionstrythings]

Nice to see the basics of EDM being shown.

[@christopherrumford]

Great video Not much info on EDM machining on KZbin. Showing us milling graphite electrodes was a nice touch.

[@abdullahwisimulacha4770]

www.thetoolanddieguy.com/course-directory/

[@xyzzyx7669]

kzbin.infovideos

[@07HDFatboy]

Great video, years ago I broke a head stud in an aluminum snowmobile engine. A friend of mine worked at Boeing and used EDM to remove the broken part for me. I had wondered how it was done. Thank you for sharing your video with us.

[@meduffer]

Thank you Marc. That was very educational. I imagine someone having an EDM in their home shop would make them a very happy camper.

[@fourleafclovis78]

That is some good background wisdom you got there. High precision, high accuracy stuff

[@halfinchholes88]

I was a moldmaker. 5 axis EDM was a very important process. A very versatile process. A very good process for porting gun barrels due to minimal bur. Set up a tungsten electrode and fixture.$$$ I've left the industry but, it was profitable while I was a moldmaker....

[@TheRainHarvester]

Very cool! What type of dielectric fluid did you use?

[@ONRIPRESENCE]

20:44 Current goes up to 11. Nice👌🏼

[@rimckd825]

Hi Marc - TYVM. EDM is usually used to produce tooling for near net shape sintered PM parts, as you know. But while watching your excellent vid for some reason I kept thinking of the novel "1632" by Eric Flint.

[@scottthornton9237]

Thank you Marc, and those who helped you in producing this video! I have heard about EDM before but, this is the first time I have seen it performed. I am glad that I got to see it through your perspective. Now who is going to help you get all that graphite cleaned up from your shop? You will be finding hidden traces of it for months! I used to do a lot of Cadmium plating using those electrodes. They are messy when being shaped!

[@THATLAZYMACHINIST]

Hi Scott! I would like to thank everyone that is involved but this is a one man show. There is a reason why my videos look amateurish, this is my little retirement project that I do it mostly to help others and also because I find it fun to produce the videos. And yes, I am alone for cleanup as well! Thanks for watching and for taking the time to write, Marc.

[@scottthornton9237]

Hi Marc, I was referring to your statement at 28:39. I am a long time subscriber to your wonderful channel. It is obvious to me that the turning and mill work was done in your shop. However the EDM portion was not. Hence, my reference to "those who helped". Once again I want to thank you for ALL the effort that you put into sharing your knowledge with us. BTW, I don't see amateurish, I see a teacher having fun!

[@tedfarwell9812]

Great video, Marc. Thanks for taking the time to make it and share it with your viewers.

[@renecartayalopez]

Thank you very much for such a nice video, very detailed and pedagogic, all the best!.

[@Gkuljian]

This is not something we see in the machining videos. Now you've got my interest up. I think this would be a great addition to a shop. Good luck doing that D with a cnc, let alone in hss. I love your quotes.

[@xyzzyx7669]

There are things not covered in the Internet. EDM is one, next one (same field, injection molding) is proper polishing and "texturing" surfaces, plus repair welding (single pulse micro-TIG and laser welding). Top Secret (almost) stuff. www.moldmakingtechnology.com/zones/mold-maintenance-and-repair

[@habaristra6248]

Thanks for the video. I remember in the 80's EDM was gonna change the world. I imagine today getting rid of an EDM machine is like trying to give away a free CRT TV.

[@zbuksi]

Hi! If there are free EDM machines that need new home please contact me.

[@excitedbox5705]

Not if you are in a precision industry. Turbo molecular pump impellers are made with EDM.

[@timmcknight1418]

Thanks for the clear and simple explanation. I only recently learned that EDM even existed. This has helped to gain a basic and useful understanding of it.

[@davidthomspson9771]

Wow.I finally know now how EDM works.Heard about it,knew it existed but had no idea how it works.Thank you.

[@xyzzyx7669]

kzbin.infovideos

[@aam50]

A really good all round intro to EDM - thanks for sharing the video. And I love that the machine has power settings up to 11. Nice to see a sense of humour in tool designers!

[@vsvnrg3263]

yeah, but he wasn't game to put it on 11 and live life on the edge.

[@jlvoet]

Reminded me of a scene in "This is Spinal Tap". LOL

[@vdubjunkie]

As always, I am SO thankful for your videos and taking this time. I hate to have to point it out, but at about 7:20 when your words are on the screen, you have the word "SAYIMG" vs. "SAYING". Please keep up the fantastic efforts you make for us all!

[@zoltankhani]

Sir you are a master ,I was looking for info in this field and you gave me it all thank you

[@ddcd53]

Great video, very informative, good explanation and very good film quality. thanks for sharing with us. Dan

[@dineentimothy]

Very cool. Thank you for sharing how this is done.

[@P3nguinDarknes5]

Very thorough explanation. No questions, here! Thanks a bunch!

[@BushCampingTools]

Great video! I'm subbing. I came across this vid because I wanted to understand this process a bit better and your vid is great!

[@allthegearnoidea6752]

How timely I just bought a book about edm and waiting for it to come from America. I fancy building a tap burner. Although wire EDM eroders do some amazing work. Does the machine use pulsed DC when cutting, or is the frying noise just a function of the arc lengths.

[@mianqamar6527]

Bundle of thanks sir..... Love and respect from Pakistan

[@malakiblunt]

I see when you need that extra push over the cliff, your EDM go's up to eleven

[@maeguk1]

Possibly the best explanation on youtube!

[@THATLAZYMACHINIST]

Thanks for the compliment, thanks for watching and for taking the time to write. It is appreciated, Marc

[@joandar1]

VERY interesting video Mark!!!!! Thanks for taking the time to produce and upload. Cheers from John, Australia.

[@virendersaini7736]

joandar1 hi sir I am a tool manufacturer in India. I want to sell my products in Australia or all the world. Can u help me

[@shodanxx]

Applied science youtube channel also has just put out an edm video. They're doing wire drilling and said they would cover wire machining next

[@kcstevens7532]

Back in the groove! Excellent video, sir.

[@andrewnallayan1148]

VERY GOOD SIR....THANKS FOR SHARING YOUR EXPERTISE ....MAY GOD BLESS YOU

[@MegaChekov]

well done never new such wonder of a thing all the best from John in Texas

[@TheRainHarvester]

8:40 "light lubricating oil" what oil exactly? Would these work : 0w20? Mineral oil?

[@MF175mp]

I bought a manual sinker edm for the home shop for less than scrap metal price from an online auction. I am maybe gonna try using it for burning insert pockets to solid carbide boring bars using the insert as electrode when I get it working.

[@Split10uk]

Nice to see EDM on here. I was trained on a Charmille D.10 back in 1974 and also worked an Agietron for several years. Apart from the usual tool steel erosion, we also did a lot of work for ourselves and other companies in tungsten carbide with the main electrode material of choice being elkonite 10w3. We also had to work in a room with a steel floor attached to a faraday cage as our machines messed up radio and TV signals. It is as you say very slow, and once set up it's back to a surface grinder making an electrode for the next job.

[@sebastienc8797]

Merci pour cette super vidéo, l'électro érosion est trop sous-représentée. Bravo, depuis la France ! :-)

[@jonblack6187]

Thanks - I operate 2 die sinker EDM and a wire EDM and I watched this from end to end and thoroughly enjoyed your presentation :)

[@TheRainHarvester]

What kind of parts do you make? (Just curious. I'm going to make an edm.)

[@lenchodirker710]

Very interesting video ! Thanks Marc. also, it's good to know that EDM is not a type of cheese. I regularly machine graphite for glass working. A shop vac with a drywall dust filter and nitrile gloves help keep my lungs & hands clean.

[@terryisaac8195]

Hey Marc, Happy New Year to you and all of your viewers! Here's hoping that everyone has a safe and enjoyable 2020!!! All the best, Terry!!!👽😎🤠

[@SpatialGuy77]

D first electrode was good but the second electrode was very groovy man! Thanks😉

[@SpatialGuy77]

Divad Ignawm - what a strange person you are...

[@davemwangi05]

I mean the first electrode was D shaped so there was a deeper message which you weren't able to unravel until you encountered a witch like me. 'Cmon boy go show her some romance. whip her with it. Whak! Whak! she will laugh like you've never heard. hahahaha.

[@fredboat]

Thanks , Enjoyed. Like the humor, later from Texas.

[@JonDingle]

Also known as "spark erosion", well here in the UK anyway. Very interesting video young man!

[@robertoswalt319]

Thanks for the wonderful video demonstrating EDM. I was wondering how the power consumption of EDM compares to the power consumed by a commercial lathe or something like a Bridgeport mill? Thanks and it is good to see you making videos.

[@brainfornothing]

Your videos are always great ! Thanks for sharing, and thanks to "Patrick" too for her support !

[@kadali.govinda7075]

EDM Machine used more than Die for injection moulds purposes I have 12 years of experience in this machine in India Hyderabad

[@OpticMoos]

Great Video, hope to see more!

[@lrmodranoel]

You have a nice style. Thanks.

[@billchiasson2019]

Great video, very informative! Keep'em coming! Thanks for the work that goes into making these videos.

[@bjd5940]

A really great video, i learned a lot, but a comment on the hazards of graphite dust might be appropriate. In industry a lot of precautions are taken, i think. Great work, none the less.

[@The_Unobtainium]

Dear Marc, thank you for your next superb vid!

[@THATLAZYMACHINIST]

In the next video, I will probably produce a double lobed crankshaft for a small steam engine. Why? Why not, it sounds like fun and that it what it is all about. Thanks for watching and for taking the time to write, Marc

[@michaelburke5750]

Thanks for the information about EDM machines and I do have one lying around. It is an old one that uses tubes in the power source. It was for removing busted taps and operates in a milling machine. Your video has answered a lot of questions I've had regarding the dielectric fluid. I believe the unit I have was supposed to run with deionized water, does that sound correct to you? Any suggestions would be greatly appreciated.

[@grahambird3112]

Im a Tool Maker and used a machine like this 40 years ago, but the name of this process is actually called ''Spark Errosion" and the machine is refered to as a "Spark Erroder ... (As is the Title in the owner/users manual !) German machine.

[@xyzzyx7669]

Old-school name. EDM is more scientific-like name. Swallow it.

[@DaleDirt]

Thank you for clarifying this process .... I found an old machine on Craigslist . I was wandering how this thing works .

[@dannyl2598]

Thank you! I appreciate you sharing your knowledge.

[@paulcooper8818]

Thanks for posting this informative video.

[@xuqinlong9164]

Your tools are very cool! Thanks.

[@ArtMeetsScience]

Fascinating, well done, very well articulated. Thanks!

[@THATLAZYMACHINIST]

Thanks Josh! It's all for fun and I am happy to know that the video is appreciated. Marc

[@mikesteele2337]

Very good video. Thank you. Can you tell me how EDM differs from electro-etching....seems very simular except electronic etching uses very low level current. But in the end, the charge erodes the material via an enchant (eg salt water). Thx

[@tsfcancerman]

Hope you make more vidz on this and how to do hard to make parts

[@250smacks]

Can you do a comparison video on pros and cons of EDM and ECM? I do a little ECM because its cheap and use 3d printed tools.

[@petermwheeler]

Very well done!

[@nathanbunten4299]

Question. Granite is electrically conductive when in water. Could you cut a hole in it with this machine?

[@anthonymagnani4180]

Great vid Marc! An educating one for me... heard of EDM but have never seen it until now! Thanks!

[@xyzzyx7669]

kzbin.infovideos

[@terryisaac8195]

Ditto

[@namzarf]

"Irregardless" is not a word---it's not a proper word. The word you want is "regardless." (9:50) Regardless, I really enjoyed your post. I believe one could rule the world with EDM---or with a really good spreadsheet.

[@witcheater]

Irregardless is a nonstandard synonym for regardless, which means “without concern as to advice, warning, or hardship,” or “heedless.” Its nonstandard status is due to the double negative construction of the prefix ir- with the suffix -less. ... The bottom line is that irregardless is indeed a word, albeit a clunky one.

[@patrickdarcy3863]

Hi, thank you for that. Do companies manufacture little bench mounted ones as they all look big?

[@alfredovillasenor8500]

Amazing! great job, do you have schematics or a 3d model of your design? If so, youd you like to share? Thanks a lot and best regards

[@etle113]

Wow! It always amazes me to see how you can bring a complex subject down to an easy to follow format. Really one of the most comprehensive machining course I have found on you tube. If you want to cover more on the EDM subject, I would really like to see a part 2 video covering electrode wear and electrode design (Graphite vs copper vs ..., how much smaller should a roughing electrode be ... Does the finishing electrode needs to also be smaller?, do we need draft angles to avoid sparking from the electrode sides?... other things to watch for? ) That would certainly help me and my fellow engineers/designers to get started on the subject. Thanks again for sharing!

[@abdullahwisimulacha4770]

Process is as simple as normal machining (cutting). For details check www.thetoolanddieguy.com/course-directory/

[@xyzzyx7669]

kzbin.infovideos

[@zexsrah5836]

Good information and vid. slowly getting there my self and hope to be as informed as you.

[@betwys1]

I enjoyed this EDM tutorial. I always ask: could I do this myself from the information given: volts, amps, advance, draw back? Yes I could!

[@petercunningham4000]

Thank You for a very interesting video. I have never seen this process before,(but I am not a machinist to start with!). I wonder what type of shop would use this process?.

[@Hauketal]

Great for creating molds for injection molding/die casting. The parts often have complicated geometry. The slow process doesn't matter that much here because it happens just once.

[@aarongossage5064]

It is immensely helpful for tool and die making. I run two wire edm machines and two sinker edm machines at my job.

[@xyzzyx7669]

kzbin.infovideos

[@JRock17991]

Triangular toolpost is brilliant.

[@chrismate2805]

Very different and interesting. Does this process do anything to change the metal in any structural way in the vicinity of the cut, metal remainig-?

[@robbiejames1540]

Yes, there is a heat affected zone around the area

[@xrayrep]

Excellent tutorial! I have a question concerning the EDM process which I have not been able find any information on any KZbin videos that describe the EDM process, both wire and plunge types of EDM. That concerns the electrical power supply. Could you please explain about the electrical power that gets fed to the EDM tooling, such as, is the voltage AC or DC? If DC, what should the polarity be (+ to the graphite tool and - to the work piece, or is it the other way around)? And how about voltage and current? Is there a rule of thumb for the power supply voltage and current based on the size or thickness of the work piece? I'm asking these questions because I am planning to build my own plunge type of EDM machine. Thank You!

[@dekutree64]

DC. Around 100-200V open circuit works best I think, but as low as 50V can work. Polarity should be switchable (different electrode/workpiece material combos prefer different polarity). Current is around 10A. Ideally you'd want to limit the current by reducing the voltage after the arc strikes, but the simpler solution is to put some power resistors in series with the arc. It's wasteful of energy, but cheap to build. Ben Fleming's books are good. Bax EDM manual also has some good info baxedm.com/wp-content/uploads/2019/08/BX17-Manual-Rev04-1.pdf

[@TheRainHarvester]

How did your edm build go? Inquiring minds want to know!

[@WarlordEnthusiast]

How did you manage to prevent the cut from tapering as the tool bit is lowered? Nearly every DIY edm video I find seems to encounter this problem when cutting

[@bikefarmtaiwan1800]

That was such a good into to EDM! Well done

[@Sctronic209]

That’s amazing. Thanks for sharing.

[@ammielrodgers9853]

Great video! What dialectic fluid was used?

[@PaulSteMarie]

Fascinating! The surface finish looks, hmm, "grainy", like one of those textured paints. Is that accurate? Does a finishing cut give something more polished?

[@aarongossage5064]

Paul Ste. Marie Yes, a finish burn would look much nicer. A couple other factors that determine surface finish are the electrode material and how many electrodes are used.

[@chuckphilpot7756]

It's crazy how many people on youtube ask questions that were answered right in the video.

[@PaulSteMarie]

@@aarongossage5064 Can you get a part that's "ready to ship” with the lighter cuts, or is grinding or other finishing going to be required to get a decent finish, say on a par to what a sharp endmill or lathe tool will produce?

[@aarongossage5064]

It's possible to get close to a mirror finish with a high end machine, though I've never seen it done. The finishes that I produce at my job require just a little bit of polishing.

[@dekutree64]

Finish quality is determined by how small and consistently sized craters you can make. Flushing is the biggest challenge for sinker EDM. With wire, you have a nice open cut to pump water through, which keeps the conductivity consistent, improving crater size consistency. To make small craters, you need short on-time for each spark. But that erodes the electrode more quickly for a given amount of workpiece material removal. Fine if you have an infinite supply of wire or a simple rod electrode, but not if you have an elaborate graphite electrode. Plus you need a power supply that can do constant spark duration. There's a variable time delay between applying voltage and the ionization process completing, so if you use a simple power supply that has a constant time between switching voltage on and off, the spark duration will be variable, and the variation is proportionally larger for shorter spark duration, limiting the achievable finish quality. So you need to apply voltage, detect ionization, and then start the timer for the spark duration.

[@cobamfg9393]

If you have a moment could you post where you got your machining block from. sets there.

[@garymucher9590]

While this clarifies what EDM is, I know it is not for me. But a very informative video all the same. Amazing what new machining methods they dream up and make one wonder what will be the future as well.

[@abdullahwisimulacha4770]

EDM is very old process (Russian invention from 30's or 40's), nothing new here...

[@claudyams2830]

It's really helpful for my study. Thank you so much!

[@ksemi02]

Love the video buddy! Very informative, helped me out a lot:)

[@RRINTHESHOP]

Nice one Marc, enjoyed.

[@outsidescrewball]

great video Marc....never seen this process before

[@abdullahwisimulacha4770]

Yet you are "teaching" people machining or whatever your videos are about...

[@DigitalN8v]

What is the energy consumption on a machine like this, and does it offset the total production costs from traditional machining techniques?

[@jasonschurtz4853]

Will the machine automatically shut down if the dielectric fluid runs out or drops below the cut?

[@scottcarr3264]

That is really an amazing process. Thankyou.

[@htomerif]

Its interesting (to me at least) that wire EDM machines can give you an almost mirror surface roughness while this, even at its finer setting, seems to produce a couple orders of magnitude rougher surfaces, at least normal to the motion of the electrode. The vertical walls of the D shaped hole seemed smoother than the concentric circles.