inverse2k1 I need an edm to do just one trick, eat out broken off bolts. It is a conservative estimate that there ar a hundred thousand in dead outboard motors in my county, due to broken off, corroded in bolts. If if can eat the heart out of them, it is dandy for me.
Great idea. I'm planning to build a more complicated one but this idea of the selenoid feed makes it so simple and fast to put one together. I also would like to try an edm lathe.
This works. Just tried myself. Tried on carbide tip, with 12vdc battery charger+ups battery. Coil should be from wire as thick as possible, because the more amps on tip, the more fun it makes! Device should be pretty rigid, tip should run precisely, oil bath makes it funnier. Thanks for inspiration. Come here broken taps, i am prepared now😁
Thanks for the video. Dude, I thought I was listening to me! Your voice is EXACTLY my voice. Freaky! I need to look into boring a 1/4" oil galley hole in our crankshaft and was thinking EDM would be an option to drilling although my machine shop says a carbide bit will handle the Rc30 with no problem..
I have used carbide tipped masonry drills in CPM3V at over 60 Rockwell. About 1/4" is as small as I've tried. When drilling something that hard it usually cracks the carbide tip as it exits it's hole. Usually when I had to do this was when clearance was forgotten about on a die section until it was discovered after heat treatment.
Thanks for the EDM video using a solenoid. I am getting inspired to build my own EDM using a 24V solenoid that I have. I strongly feel, you should have waited and included in the video, a footage of how the hole looks after the job is completed. In your next version, you may wish to replace the shaky and wobbly mechanism to hold the electrode with a more stable one. Lastly, according to text books, the positive lead of the power supply should be connected to the workpiece and not to the electrode in order to maximize erosion of the workpiece.
Hi Bala - did you make any progress? Another thing to consider with this setup is fire safety. The dielectric oil he is using does have a flashpoint, and if the oil level drops the extreme temperature of the arc could reach the vapors and cause a fire. I read about this here: www.firetrace.com/wp-content/uploads/Protecting-Against-EDM-Fires.pdf
Here is one using a mechanical pencil (a graphite electrode). "Reflex EDM". www.bnpeters.com/mass62-how-to-make-something-that-makes-almost-anything.html
Could you list what kind and a part number for the solenoid and wiring diagram to build a edm for the home back garage to cut out broken taps or easyouts , just old timer playing in garage thanks
what gauge magnet wire on the coil and about how much wire was used to make the electromagnet? I need an EDM since I got a tap stuck 2" deep in a 1" square iron stock. would need a diagram of how to build yours though
its not breaking down iron into carbon... it only breaks the molecular bond between iron atoms. it would have to rip away 20 electrons, 20 protons, and 24 neutrons from an iron atom to make it a carbon atom. our best efforts to make synthetic gold took tremendous amounts of power. way more than can be delivered to an average house.. the machine alone to do that was the size of a 2 story house. cool machine though. brilliantly inexpensive if it works. it doesn't need to be precise if your not doing production part fitting.
Before anyone gets too excited don't you think if it actually works there would be 50 videos just like it? There's a reason you only see one and a reason you don't see the end result, which my guess is a bolt with a black spot on top no hole. Someone got overly excited and posted the video before seeing its end results. Can't knock the guy for trying though.
This is an electrochemical erosive process where molecules of the alloy's crystalline structure are cemented out in a single-replacment reaction. What you're thinking of is an atomic/subatomic "level". Fission is the seperation of an atom[s] nuclei by bombardment of neutrons.
I can't actually say it doesn't work bc I'm confident after running 24 hrs it could probably EDM through single ply aluminum foil, just don't try to double it up.
Brilliant ! Any technically competent person can design an EDM costing $100,000. but making a simple one from common stuff for $20 is pure brilliance,
Ask youself, is it any stable or accurate?
Repeatability and accuracy of the results always come at a hefty price tag in the machining world.
inverse2k1 I need an edm to do just one trick, eat out broken off bolts. It is a conservative estimate that there ar a hundred thousand in dead outboard motors in my county, due to broken off, corroded in bolts. If if can eat the heart out of them, it is dandy for me.
I need one. This is an excellent solution to broken taps.
Great idea. I'm planning to build a more complicated one but this idea of the selenoid feed makes it so simple and fast to put one together. I also would like to try an edm lathe.
This works. Just tried myself. Tried on carbide tip, with 12vdc battery charger+ups battery. Coil should be from wire as thick as possible, because the more amps on tip, the more fun it makes! Device should be pretty rigid, tip should run precisely, oil bath makes it funnier. Thanks for inspiration. Come here broken taps, i am prepared now😁
It would be great if we could see the resulting hole!
Thanks for the video. Dude, I thought I was listening to me! Your voice is EXACTLY my voice. Freaky! I need to look into boring a 1/4" oil galley hole in our crankshaft and was thinking EDM would be an option to drilling although my machine shop says a carbide bit will handle the Rc30 with no problem..
Use a cobalt drill bit, or 2 flute end mill.
I have used carbide tipped masonry drills in CPM3V at over 60 Rockwell. About 1/4" is as small as I've tried. When drilling something that hard it usually cracks the carbide tip as it exits it's hole. Usually when I had to do this was when clearance was forgotten about on a die section until it was discovered after heat treatment.
Hi! Excellent! Could you please make some tutorial for making such thing? Excellent once again!
Another simple enhancement, is to pump EDM fluid/oil/water down through a hollow electrode, so as to improve clearing the crud.
You should build one from the start thanks
Thanks for the EDM video using a solenoid. I am getting inspired to build my own EDM using a 24V solenoid that I have.
I strongly feel, you should have waited and included in the video, a footage of how the hole looks after the job is completed.
In your next version, you may wish to replace the shaky and wobbly mechanism to hold the electrode with a more stable one.
Lastly, according to text books, the positive lead of the power supply should be connected to the workpiece and not to the electrode in order to maximize erosion of the workpiece.
Hi Bala - did you make any progress? Another thing to consider with this setup is fire safety. The dielectric oil he is using does have a flashpoint, and if the oil level drops the extreme temperature of the arc could reach the vapors and cause a fire. I read about this here: www.firetrace.com/wp-content/uploads/Protecting-Against-EDM-Fires.pdf
Here is one using a mechanical pencil (a graphite electrode). "Reflex EDM".
www.bnpeters.com/mass62-how-to-make-something-that-makes-almost-anything.html
@@davidgorczyca5675 Link is dead.
why don't you show the results ...
yea no shit.
It's taking longer than he thought, he's waiting to edm through the bolt still.
@freezeme360 lol Sounds about right
Fantastic. Can U share some schematics? Would be great! Thanks :)
I gotta give this a try, thanks for sharing. I'm also planning on throwing a capacitor in parallel to boost the current a bit
I tried parallel capacitor. It weakens the spark.. to my thinking it makes it worse.
maybe better way would be the selecting propper solenoid, that just don't let the electrode to get stuck
Very clever !! Think its possible to come up with one that works vertically ?
Will this also burn a hole in tungsten carbide? I need about a 2 mm hole drilled in tungsten carbide.
yes
yes but it takes a while because it isn't very conductive.
Can you post a schematic, or add the parts to the description? or even better, make a video showing how you built and wired it? Thanks
Would a car starter selenoid and two batteries in series work? I'm going to try this today.
dear do you try it to make it and it is real?
Could you list what kind and a part number for the solenoid and wiring diagram to build a edm for the home back garage to cut out broken taps or easyouts , just old timer playing in garage thanks
Hello Dear, I am very interested in this topic. Could you give me more details about your instrument please fabricaste?
What did that solenoid come out of ?
what gauge magnet wire on the coil and about how much wire was used to make the electromagnet? I need an EDM since I got a tap stuck 2" deep in a 1" square iron stock. would need a diagram of how to build yours though
you dam genius
use water instead of oil. the carbohydrate residue insulates, so a lot of the power of the spark is negated
How long did it take?
Superb....
I wanted to make it......
Can u help me...as guide
Have you developed pulse generator?
what is the electrode made of?
you rocks man 8-)
Nice project. Too bad about the audio. You could have made the background noise less intrusive and do a voice over?
electrode material
howdy, can I ask, how deep of a hole was it and how long did it take? thanks much
Bravo.......wire diagram......wow.....CHEERS
its not breaking down iron into carbon... it only breaks the molecular bond between iron atoms.
it would have to rip away 20 electrons, 20 protons, and 24 neutrons from an iron atom to make it a carbon atom. our best efforts to make synthetic gold took tremendous amounts of power. way more than can be delivered to an average house.. the machine alone to do that was the size of a 2 story house.
cool machine though. brilliantly inexpensive if it works. it doesn't need to be precise if your not doing production part fitting.
Có thể cho tôi sơ đồ mạch điện được không?
We have no numbers tho
Can i use a 48v power supply along with a board that switches to pwm instead of using a solenoid? Or would that not work?
Hi umashi, check my homemade EDM machine, I used PWM and a 200V power supply. Hope it helps!
Fantastic
What do you use as point?
skidloaders1 Hi, use a stainless bike spoke, in this case, but brass works better I find.
Thanks for sharing
I'm in love
Super.
Genius. !!
sir please teach me i want to make for my self
I don't see no steeeenking hole
Cheap way to remove broken drills and taps
This is a basic tattoo gun circuit
Not really. The victim of the tat, isn't completing the circuit.
Eddie Foy true, just contacts in a different place, but the basic idea is similar. Holy crap this is old. 🤣
Before anyone gets too excited don't you think if it actually works there would be 50 videos just like it? There's a reason you only see one and a reason you don't see the end result, which my guess is a bolt with a black spot on top no hole. Someone got overly excited and posted the video before seeing its end results. Can't knock the guy for trying though.
Hii
Get a steady cam.
You’re not breaking down metal at a molecular level with electricity. That would be fission...
This is an electrochemical erosive process where molecules of the alloy's crystalline structure are cemented out in a single-replacment reaction. What you're thinking of is an atomic/subatomic "level". Fission is the seperation of an atom[s] nuclei by bombardment of neutrons.
That sounds like the atomic level mate
I can't actually say it doesn't work bc I'm confident after running 24 hrs it could probably EDM through single ply aluminum foil, just don't try to double it up.
Haha small hole