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blake in spokane
03-20-2008, 10:41 PM
Has anybody built their own tap/drill disentagrator from the articals in HSM, Flemings book, or ? I would like to build one. Any coments and/or ideas. Thanks - Blake

tattoomike68
03-20-2008, 10:56 PM
The only ones that were home made I read about was at metalillness.

The sinker edm
http://bbssystem.com/viewtopic.php?t=501

And the wire edm.
http://bbssystem.com/viewtopic.php?t=73

there is not tons of info but some good pictures.

Rich Carlstedt
03-20-2008, 11:07 PM
I did the Ben Fleming unit..
I love it . Works as expected and is really handy
Built it for under 100 bucks

Rich

outback
03-20-2008, 11:18 PM
You Mean something like this?

http://img.photobucket.com/albums/v30/jglass/Automation%20Projects/sinkingEDM.jpg

This is the next step. A home built wire EDM
http://img.photobucket.com/albums/v30/jglass/Automation%20Projects/Wire%20EDM/sideview.jpg

http://img.photobucket.com/albums/v30/jglass/Automation%20Projects/Wire%20EDM/burning.jpg

Outback

tattoomike68
03-20-2008, 11:19 PM
You Mean something like this?

Outback

Speak of the devil and up he jumps. :D

Mark Hockett
03-20-2008, 11:44 PM
I have also built the Metal Disintegrater by Ben Flemming.
http://cgi.ebay.com/BUILD-A-METAL-DISINTEGRATER-EDM-TAP-REMOVER_W0QQitemZ370033489466QQihZ024QQcategoryZ63 3QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

I built if for a specific job of removing a broken EZ-out and bolt from an engine block. It worked well and the block was saved. The customer payed for all the materials to build it plus payed to remove the bolt so it just cost me a little labor. It was very simple to build.

Rich Carlstedt
03-20-2008, 11:53 PM
No, Like this..
http://i273.photobucket.com/albums/jj220/StationarySteam/Shop%20Tools/EDMServoDrive.jpg
Servo drive unit.
http://i273.photobucket.com/albums/jj220/StationarySteam/Shop%20Tools/CarbideBurnout.jpg
burning a 3/16 square hole in a carbide insert as a test.
About 35 minutes .140 deep.
Used Kerosene.. EDM Fluid is 2-3 times faster
http://i273.photobucket.com/albums/jj220/StationarySteam/Shop%20Tools/Burningabroken0-80stud.jpg
I broke a stud in a 0-80 die ...
The electrode is .032 brass shown here with fluid drained out
http://i273.photobucket.com/albums/jj220/StationarySteam/Shop%20Tools/EDMControl.jpg
The simple, yet very effective Ben Fleming Control.

Rich

torker
03-21-2008, 12:11 AM
LOL! I was reading Mikes links...thought that was pretty cool, sorta like another I'd seen.
Then I see it was Jims rig... I just like that thing.

BadDog
03-21-2008, 12:11 AM
What type of power requirements are needed for something like these small sinker or tap burner EDMs?

Dunc
03-21-2008, 12:17 PM
I vaguely remember an article in Popular Science or Popular Mechanics (1950's or 1960's) that had a plan for a simple - crude - version of this. Used a couple of light bulbs (those old Edison style thingies that were the only game in town back then). Don't have the details; tried it out and it worked!

Prokop
03-21-2008, 12:52 PM
In my former life I designed electrodes for machining aluminum die casting dies. Great engineering, loved that job.