I just realized that this forum existed and have spent a fair amount of time browsing. Two years a go I built Henry Washburns probe EDM with a few changes...
Hi, John. I like the pencil lead idea. I once checked mechanical pencil leads for conductivity when planning an electrolytic cell. Worked pretty well, and...
I have used pencil lead on occasions. I think you will find the harder lead's work better than the soft lead's for EDM operations. Ben ... From: Donald H...
i ran edm for a couple of years and looked for a fluid to burn with tryed h2o a couple of times but did not like what is did to every thing mainly eating every...
The water I have been using has not caused any problems with mine. It is de-ionized and my son in law gave me some. I was going to use distilled but he said...
After going to get a coffee I should clarify how I use the water. I do not leave the tank filled and drain it after a job. Since I only use it on occasions it...
same kinda idea, but thicker, if you VERY CAREFULLY disasemble a drycell batery, you will finda carbon rod in the center, scrap off the junk and clean it up a...
In most cases I think you will be sorely dissapointed if you in using these types of carbon rods if your applications is anything more serious than just...
you know, it's easy to getany number of forms of carbon it would be easy to take any of these and pulverise the ever-loveing tar outta them, now if we were to...
Pencil leads use clay as the primary binder. For special shapes you might be able to make something that is sufficiently conductive to be useful. It ...
I dunno! Conductive paints are made from graphite or powdered metal mixed in a varnish base. Used to coat and electroplate non-conductive pieces like glass or...
I would be tempted to use gum arabic with some copper sulphate mixed in and used as a binder for the carbon/graphite. Just a thought. Donald H Locker...
I like the idea for useing gum aribic, I dont think PMC would work, cause it dosn't actualy use clay persay, it's some kinda organic binder and some fluxes, I...
Hello all, First let me say Yahoo is annoying! I am a member of this group under a different user name, but for the life of me, I couldn't remember my info,...
... You've taken the word "phenol" out of chemical context. In the use shown in the patent it is no more dangerous than the cyanide in superglue........ It...
Think yourself lucky a mummy blue tongue has moved into my shed and wont budge. The damn thing is too clever to catch, it's found all the hidey holes and...
hi... I'd love to take you up on your offer for free used electrodes. If you can accept payment via PayPal (VERY convenient for many things, so please...
Reading the criteria in the book for gearmotor selection, I observed the following: 1) Rpm range of between 60 and 100 rpm is acceptable 2) the book specifies...
I see no reason that any combination that would accomplish end result should work fine though I have not actually tried them. The only reason for not using the...
Jim, I used 100:1 gearbox and a 1/4-20 leadscrew, but it really is not all that critical as the thing just jidders while burning. The max head speed only...
I am not sure what you mean by "Just Jidders" when operating properly the actual motor shaft, assuming you can actually see it, should just "twich" back and...
... Perfect description of "jidder" -- I think the term comes from the R/C fraternity describing a servo where the shaft is not still at "rest", but holds...
Regarding the gear motor selection, Thank you for all the input. I am looking forward to using this machine. I am trying to expand my machining skills...
Gentlemen. Many thanks to all those who helped me recently and I thought you might like to see the progress I have made so far. (see attached jpegs) I have...
Pauyl, I tried to send you a message with pics, but it was rejected. If you would like to see pics of my unit please say where to send them. Rich Dean...
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