Re: [CAD_CAM_EDM_DRO] Re: micro wire-edm project (and software solution)

I would like to add to the below list the software and manuals writen by BJ
Rao . He has two manuals one is for a Sinker EDM and the other is a Wire
EDM. Both are well writen and have plenty of detailed drawings. Best of all
it included the software to run either the sinker or the wire EDM.
The manuals can be had either on EBay or from either of my web sites below.
While I have not built either units, I have gotten good reports.
See
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7556843129&ssPageName=ADME:L:DS:US:8
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7557170957&ssPageName=ADME:L:DS:US:8
Dan Mauch
low cost stepper and servo motors.
cases for Gecko drives
kits and assembled 3-4 axis drives
www.camtronics-cnc.com
www.seanet.com/~dmauch

----- Original Message -----
From: "turbulatordude" <dave_mucha@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, October 28, 2005 7:39 AM
Subject: [CAD_CAM_EDM_DRO] Re: micro wire-edm project (and software
solution)


> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "JCullins"
> <james_cullins@s...> wrote:
>>
>> What voltage and currents do most use for EDM ?
>> Constant current is not hard to produce.
>> Do you maintain given distance away from the material to be cut ?
>>
>> I guess I need to get a book on the subject.
>> Jim
>
> There are two beginners books.
>
> Langolis has been around for a few years and is pretty good. He
> rambles a lot and much of the book is haphazzard writing. It was very
> hard to follow some of the ideas as it appeared he knew what he was
> talking about so he didn't have to write it down.
>
> But, if you can piece together the ideas he puts out, it does cover
> the topic very well.
>
> He did go into theory pretty well, and for some people, that is a nice
> part. for others, it just confuses the matter.
>
> The other book, Build and EDM by Ben Flemming is written in a
> different manner. Ben wrote it almost as an instruction manual for a
> plans set. Very straighforward in a more step by step approach.
>
> I think he missed some of the details, but they are very easily filled
> in my the average person.
>
> There are two yahoo groups for EDM that I am aware of.
>
> http://finance.groups.yahoo.com/group/EDM_CNC/
>
> http://groups.yahoo.com/group/EDMHomeBuilders/
>
> The second is Ben's list where he will answer questions about his book
> and building and such.
>
> In the first, there is a decent links and files section, so both are
> worth visiting.
>
> Hope that helps.
>
> Dave
>
>
>
>
>
>> ----- Original Message -----
>> From: "Graham Stabler" <eexgs@n...>
>> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
>> Sent: Friday, October 28, 2005 4:05 AM
>> Subject: [CAD_CAM_EDM_DRO] Re: micro wire-edm project (and software
>> solution)
>>
>>
>> >
>> >> A current sense resistor has to be able to handle the total current.
>> >> diodes are cheap in comparison. They have a high voltage drop which
>> >> is not always a good thing, but can make monitoring the current easy.
>> >> But, did I mention they are cheap ?
>> >>
>> >
>> > I am still a little confused as the voltage drop over a diode will be
>> > its forward voltage and that is not normally very large. The voltage
>> > drop will not be proportional to current and as you would still need
>> > to limit the current you could use the current limiting resister.
>> >
>> >> Many of the low end RC EDM machines use them as the sense voltage
>> > source.
>> >
>> > So they are not using them as a voltage references?
>> >
>> > I will probably measure gap voltage anyway to be quite honest and if I
>> > were to use a shunt it could be a tiny value, at the low intended
>> > currents it would not need to be all that big or expensive.
>> >
>> > Graham
>> >
>> >
>> >
>> >
>> >
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>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
> if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
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