[DeTomaso] Extracting broken bolts by EDM disintegration
Jerry Knotts
knottsj at galstar.com
Tue Nov 4 20:18:04 EST 2014
Bill,
EDM is really great. The only drawback is you need to bring the part
to the EDM machine. I had it used on removing broken and fully rusted
bolts on a couple of Gravely yard tractors. At that time I worked in
Houston in oil field parts manufacturing and had to bring the tractor
parts to the shop. Set the machine up, packed the portion around the
part to be removed with a red rag soaked in salt water and let it run.
Usually only a few minutes and it was done. Sometimes left a bit of
thread in the bolt hole but was easily cleaned.
Wish I had one here at the farm. Am working on a trimmer with steel
bolts in an aluminum trim body.
jerry knotts
On 11/4/2014 6:51 PM, Bill Lewis wrote:
> HOT ROD Magazine for December 2014 - has an article about removing
> broken bolts, bits, taps, etc., from metal objects with a machine
> called an Elox "Electrical Discharge machine" (EDM), which was
> originally built in the 1940's. The process, "can non-invasively
> vaporize the broken part, leaving the surrounding material unscathed."
>
> ---------------------------------------------------------------------
> If you are interested or need more info: Jim's Tap Extracting
> www.extractit.com I am not familiar with this, but the word
> "vaporize" really caught my attention. ----BILL Lewis
>
>
>
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-------------- next part --------------
Bill,
EDM is really great. The only drawback is you need to bring the part
to the EDM machine. I had it used on removing broken and fully rusted
bolts on a couple of Gravely yard tractors. At that time I worked in
Houston in oil field parts manufacturing and had to bring the tractor
parts to the shop. Set the machine up, packed the portion around the
part to be removed with a red rag soaked in salt water and let it run.
Usually only a few minutes and it was done. Sometimes left a bit of
thread in the bolt hole but was easily cleaned.
Wish I had one here at the farm. Am working on a trimmer with steel
bolts in an aluminum trim body.
jerry knotts
On 11/4/2014 6:51 PM, Bill Lewis wrote:
HOT ROD Magazine for December 2014 - has an article about removing
broken bolts, bits, taps, etc., from metal objects with a machine
called an Elox "Electrical Discharge machine" (EDM), which was
originally built in the 1940's. The process, "can non-invasively
vaporize the broken part, leaving the surrounding material unscathed."
---------------------------------------------------------------------
If you are interested or need more info: Jim's Tap Extracting
[1]www.extractit.com I am not familiar with this, but the word
"vaporize" really caught my attention. ----BILL Lewis
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Detomaso Forum Managed by POCA
DeTomaso mailing list
[2]DeTomaso at poca.com
[3]http://poca.com/mailman/listinfo/detomaso_poca.com
References
1. http://www.extractit.com/
2. mailto:DeTomaso at poca.com
3. http://poca.com/mailman/listinfo/detomaso_poca.com
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