Another way to get a similar thing is to slide a square tube into a round one and fill the four 'D' cavities with epoxy or casting resin. Considering the low...
NASA has recently answered with a world press release to the prediction of a mega tsunami, created by a possible impact of a fragment of the comet SW-3 on MAY...
Oh please. See NASA's response to the nonsense... http://www.nasa.gov/mission_pages/hubble/Comet_73P.html ... prediction of a mega tsunami, created by a...
SPAM SPAM SPAM SPAM SPAM SPAM SPAM I don't like spam! This message has been checked for viruses but the contents of an attachment may still contain software...
Can you only use brass, copper, or graphite as electrode material? What about stainless or carbon steel? I am building a quick EDM from Jon Elson's design to...
Most any conductive material may be used for an electrode it just depends on how much wear you want to tolerate. For example if you use a steel electrode the...
Scott, The 2500 is the filter and the 6 is the spark. Jon Elson's EDM site is here: http://pico-systems.com/edm.html His control is by jogging a CNC mill Z...
Power supplies might be worth a look at for small capacitors if you are really desperate to get one right away, just make sure the voltage rating is well up to...
RichD, I have to burn out a 1/4" by 2" long piece of carbide. Would the 6mF be faster than the 3mF? Yes I will be using it in a CNC mill. Thanks, Scott ... ...
Scott, The higher the capacitor value the faster the "burn", but others factors influence the cut as well. Electrode material (copper is excellent for this), ...
RichD, I do not have an amp meter for feedback, but no auto back-up. I am trying to do this quick and dirty to get the part fixed. I currently have some...
Scott, an analog (needle type) VOLTMETER is really a better choice. You can see imediatly what is going on. Zero V = short High V = no touching-arcing RichD ...
Scott, for occasional-short term use k1 or straight kerosene is fine. That's all I use. richd RichD, Was planning on using Kero. or do you recommend something...
Ben, The North American Model Engine Show went great. Your unit held up to constant abuse wonderfully. I got a lot of comments on how nice the power supply box...
I have a picture of the machine Kyle refers to. http://neme-s.org/NAMES_2006/NAMES_2006_25A.htm I looked great and appeared to operate fine. A great job by...
I have my EDM running. (Jon's design). I am using it to burn out a 1/4" carbide shank and it is taking alot longer than I thought. I have burned down...
... Would be sensible the wear ratio should be better. Use a tube so you effectively have less material to remove. ... Distilled/DI (same difference really)...
Scott, brass is the problem. I started out using copper to test my unit and get a feel for it. Then, one day I wanted to show it off and just grabbed what was...
What about the voltage? Should I run at 75V or at 30V to get a faster burn? Can I use a 12.5mF spark capacitor and be better off? Thanks, Scott ... From:...
75v will make the spark gap larger making flushing better so I would go for 75v. A larger capacitor is better for roughing, it does more damage to the work so...
Scott, it would be very difficult to get any spark at all at 30V. 75V is really the minimum. Commercial machines run upwards of 300V. A 120mf photoflash cap @...
Let's see . . . "This prediction, based on a clear and precise psychic communication" just how do you get a "clear and precise *psychic* anything? Visit...
Guys, I am not getting anywhere. I used some copper home wiring, 12 gauge, and it eroded faster than the brass. I also got some carbon arc gouging rods from ...
Scott, Lets start over. It's clear as mud here. What circuit are you using? What value ballast resistor? Is this automatic control (servo) or manual (seat of...
RichD, I am using Jon Elson's Circuit. The resistor is one of the long brown sprial wound type that has a sliding center tap to vary the resistance. It is ...
Finished with the generator and played red light / green light for about 10 minutes like a little kid with just the servo motor wired up. What a neat circuit!!...
Hi, my name is Terry. I just joined several days ago. I like this design. I work with the more modern machines at work. The surface finishes is fantastic. I...
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