[ML-General] Electrostatic Discharge Machine

Thu May 28 09:06:28 CDT 2015

That appears to be complex geometry to do. You would need to ensure that
there are no undercuts in that and there is a bit of setup to get the angle
you want on the orifice. You would need to cantilever the electrode on the
inside and burn that geometry.  Now if all you want to do is punch a .012"
round hole that would not be too hard and could be done from the inside.

On Thu, May 28, 2015 at 8:58 AM, Jacob Chancery <jacob.chancery at gmail.com>
wrote:

> If a picture is worth a thousand words, how much is a 3D model worth?
>
> A model of what I want to make is attached.
>
> I found evidence that Ben Fleming's book is buildable, so I think I'll
> order a starter kit
> <http://www.homebuiltedmmachines.com/index.php?page=buy&product=pulse_edm_starters_kit>
> from him.
>
> Evidence:
> https://www.youtube.com/watch?v=r4F3SQW11gg
> http://www.liming.org/edm/
> http://modelenginenews.org/meng/edm/index.html
>
>
>
> On Thu, May 28, 2015 at 8:26 AM, cameron.kellough <
> cameron.kellough at knology.net> wrote:
>
>> .012 is pretty small.  To drill this would likely require a sensitive
>> drill like
>>
>> http://www.dumorecorp.com/sensitive-drill-presses#Specifications
>>
>> The key point being that the 17000 rpms the dumore runs at is probably
>> the minimum required.  A quick perusal of available drill bits suggests
>> significant depth will be hard to achieve.
>>
>> Other options are edm already discussed and laser drilling though the
>> depth for laser drilling is only 2mm.
>>
>>
>> http://www.oxfordlasers.com/laser-micromachining/laser-micro-drilling/sub-contract-micro-drilling/
>>
>>
>> What about brazing a hypodermic needle into a reasonably sized hole.
>>
>> --Cameron
>> Sent from my Samsung Galaxy Note®|PRO
>>
>>
>> -------- Original message --------
>> From: James Fluhler
>> Date:05/27/2015 8:14 PM (GMT-06:00)
>> To: General discussion about makerslocal
>> Subject: Re: [ML-General] Electrostatic Discharge Machine
>>
>> If you needed a 12mil hole through something less thick I've got access
>> to an xy milling table that could do it easily but it's setup for milling
>> circuit boards not 1.5" thick pipe haha
>>
>> James F.
>>
>> On May 27, 2015, at 7:26 PM, Erik Arendall <earendall at gmail.com> wrote:
>>
>> Yeah a .012" hole is a tough one. EDM would give you a good finish and a
>> true hole. Burr free too. I've contemplated a build of one before.
>> On May 27, 2015 7:20 PM, "david" <ainut at knology.net> wrote:
>>
>>>  just buy some Hilsch vortex tubes.
>>>
>>>
>>>
>>>
>>> On 05/27/15 19:18, Jacob Chancery wrote:
>>>
>>> I should've said Electrical instead of Electrostatic.
>>>
>>> http://en.m.wikipedia.org/wiki/Electrical_discharge_machining
>>>
>>> I want to cut small (0.012” throat diameter) planar de Laval nozzles in
>>> a piece of 1.5” schedule 10 pipe to spin a garret GT1548 turbine.
>>>
>>> So far I've gotten a few no-quotes, a few ”that can't be done” and one
>>> unofficial ”more than $10,000” responses.
>>> On May 27, 2015 6:44 PM, "Erik Arendall" <earendall at gmail.com> wrote:
>>>
>>>> They are interesting machines. What is your purpose for the machine?
>>>>  On May 27, 2015 6:33 PM, "clayton pannell" <clayton.pannell at gmail.com>
>>>> wrote:
>>>>
>>>>> Creates ESD to cut metal
>>>>> On May 27, 2015 5:00 PM, "Daniel Valdez" <smeeon at gmail.com> wrote:
>>>>>
>>>>>> wait.. is this to cause ESD or to dissipate it? I'm confused and
>>>>>> intrigued at the same time.
>>>>>>
>>>>>> On Wed, May 27, 2015 at 4:51 PM, Jacob Chancery <
>>>>>> jacob.chancery at gmail.com> wrote:
>>>>>>
>>>>>>> Anyone on the list ever built their own EDM machine?
>>>>>>>
>>>>>>>  I'm thinking about buying this starter kit:
>>>>>>>
>>>>>>> http://www.homebuiltedmmachines.com/index.php?page=buy&product=pulse_edm_starters_kit
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> General mailing list
>>>>>>> General at lists.makerslocal.org
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>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>  --
>>>>>> Daniel Valdez
>>>>>> Audio Insight
>>>>>> Huntsville, AL
>>>>>> Office 256-885-1995
>>>>>> Cell   256-783-6983
>>>>>> Fax   256-885-1994
>>>>>> www.audio-insight.com
>>>>>>
>>>>>> _______________________________________________
>>>>>> General mailing list
>>>>>> General at lists.makerslocal.org
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>>>>>
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