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

Thanks Dan.
I am thinking of using a PIC to control the movement and
current /voltage which ever is needed. I have done something similar
to this before.
Jim

----- Original Message -----
From: "Dan Mauch" <dmauch@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, October 28, 2005 10:39 AM
Subject: 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
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > Addresses:
>>> > FAQ: http://www.ktmarketing.com/faq.html
>>> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>>> > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>>> >
>>> > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>>> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>>> > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@a...,
>>> > timg@k...
>>> > Moderator: pentam@c... indigo_red@q... davemucha@j...
>>> > [Moderators]
>>> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>>> >
>>> > 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
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>>
>>
>>
>>
>>
>>
>>
>> Addresses:
>> FAQ: http://www.ktmarketing.com/faq.html
>> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>>
>> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
>> timg@...
>> Moderator: pentam@... indigo_red@... davemucha@...
>> [Moderators]
>> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>>
>> 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
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
> [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> 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
>
>
>
>
>
>
>