The primary purpose of this group is to support those who are building the EDM (Electrical Discharge machine) described in: The EDM How-To Book written by Ben Fleming.
Individuals wishing to discuss other EDM designs and design concepts are welcome to explore those ideas here as well.
The rules here are simple, be friendly and respectful of other builders, off topic (i.e. non EDM related) or personal attacks will result in being banned from posting.
This is a photo of the PCB (Printed Circuit Board) that is now available. Using the board considerably reduces the construction time of the power supply.
The PCboard is available for $25 which includes postage.
The EDM How-To Book sells for $30 which Includes postage.
NOTE: Both quoted prices include 1st class postage(USPS) shipped to any U.S. Address ONLY.
If you live outside the U.S.A. E-mail
bnf@mail.uark.edu
for charges to your country.
See the following Web site for additional information
http://homebuiltedm.tripod.com/
Yes the comparator can be viewed as correct. But has room for improvement. I know what you mean and it gave me a headache as well. This is why I used a cheap
Franz,  a couple of years ago I posted a link for a schematic to make a "edge finder" for EDM. And a few posts later answered someone on how to use it.
No one including ME has ever said that Ben's design doesn't work!!! Can it be better? Yes.  The design uses a brushed gear motor for the ram, easy to
I would hardly say wrong - it seems to work for many people, which is the final test. I would try to make improvements to eliminate some of the reported