Re: [CAD_CAM_EDM_DRO] Project on a miniscule budget

>Here's one to challenge all of you!

Hah! My middle name is challenged! Wait a second, that doesn't sound right!

>I need to put a 0.1875" square hole along a 1.25 inch length of a
>0.250" square BMS bar. I need this hole to be a lapped or precision
>fit on 0.1875" square bronze slipper. Fabrication using silver
>soldered joints is a possibility but so far I have not been able to
>produce these components with the fine finish I need for the job...
>An EDM machine came to mind and I would like to have a go at making
>a simple one if that's possible. I am retired here in the UK and
>have little spare cash but as an ex audio engineer and film sound
>recordist I do have some knowledge of electronics. I know there was
>a circuit for a very simple machine in Model Engineer magazine many
>years ago (1970's I think) but tracking the issue and a copy down
>has been fruitless so far even through the now owners of the
>publication. I believe the designers name was Roy Amsbury who worked
>for Rolls Royce in Derby but I have been told he passed away some
>years ago. Just wondered if anyone has a simple EDM machine design
>that they might be prepared to let me have. Could be an interesting
>project to pass the time away with

Paul, take a look at
http://tech.groups.yahoo.com/group/EDMHomeBuilders/ as they may be
able to help you.


David G. LeVine
Nashua, NH 03060


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