Hello,
I can test input bits with hal show, but how do I test output pins?
That is I need to know parallel port physical pin positions in order to
choose my pin schema and make a correspondence hal pin --> physical pin
Thanks.
Valerio
Some googling turned up info on first drilling through with an undersize tool
then making a grinding pass to finished size.
http://link.springer.com/article/10.1007/s12541-012-0123-2
--
Check out the vibrant tech communi
Small hole EDM (electrical discharge machining) drilling, also known
as fast
hole EDM drilling, hole popper, and start hole EDM drilling, was once relegated
to a “last resort” method of drilling holes. Now, small hole EDM drilling is
used
for production work. Drilling speeds have be
i was surprised how much off the shelf stuff exists
its not impossible to reverse engineer the connections
but a working experience is handy
maybe you know an edm service engineer cum hacker?
the mechanical stuff ( motors spindles pumps ) are too cheap to mess
with diy
the guides wont be a diy pr
On Friday 10 February 2017 21:54:45 Jon Elson wrote:
> On 02/10/2017 03:59 PM, Jim Craig wrote:
> > So my questions are as follows. What type of power supply would I
> > need to use for doing small hole EDM drilling? Can I use a tig
> > welder as the power supply and control pulsing with LinuxCNC
wow, i gotta look into that epoxy idea,
we just pressurized the cavity with water
and that was a complex jig already!
thx tomp
On 02/11/17 05:58, Comcast wrote:
> The laser drilling was the first thing I thought of too. Pratt & Whitney
> uses this process to drill similar size holes in the turbi
re: other technogies...
if you can drill it, it'll be faster
a good applications engineer from a good company
can read your specs and give you tools and tooling that will do the job
it may be expensive but its pretty guaranteed and even proven on your
test parts
tomp
On 02/11/17 05:42, Jim Craig
Jim hello
I have worked with a lot of taiwanese hole drills ( hopops for short )
On 02/11/17 04:59, Jim Craig wrote:
> I am working on a project at work where we are designing a new CNC
> machine for a particular application. Up to this point I have been
> planning on using a standard machine spin
On 02/10/2017 03:59 PM, Jim Craig wrote:
> So my questions are as follows. What type of power supply would I need
> to use for doing small hole EDM drilling? Can I use a tig welder as the
> power supply and control pulsing with LinuxCNC driving an external IGBT?
TIG is constant current, and general
On Friday 10 February 2017 13:31:37 Nicklas Karlsson wrote:
> Water have very high heat capacity and hence is good for cooling or
> heating. But with water at that temperature I prefer to stay in
> another room.
>
Actually, I'd like to be in a room in the next drainage.
> > use of water vs electr
On Friday 10 February 2017 09:33:15 John Thornton wrote:
> http://linuxcnc.org/docs/2.7/html/gui/gladevcp.html
>
> JT
>
Sounds like I need to go back to gfx-101. I might eventually be back for
fine tuning info.
Thanks John.
> On 2/9/2017 7:08 PM, Gene Heskett wrote:
> > On Thursday 09 February
The laser drilling was the first thing I thought of too. Pratt & Whitney uses
this process to drill similar size holes in the turbine blades. The keep the
slag out of the holes they fill the interior of the blade with epoxy: Upon
burn through the epoxy virtually explodes, blowing and slag or
On 2/10/2017 4:16 PM, andy pugh wrote:
> On 10 February 2017 at 21:59, Jim Craig wrote:
>> The more I think about the actual process and needs of the machine I am
>> thinking that a small hole EDM drilling head would be better for this
>> application.
>
> Maybe consider lasers (and sharks?) too:
>
On 10 February 2017 at 21:59, Jim Craig wrote:
> The more I think about the actual process and needs of the machine I am
> thinking that a small hole EDM drilling head would be better for this
> application.
Maybe consider lasers (and sharks?) too:
https://www.oxfordlasers.com/laser-micromachini
On 10 February 2017 at 18:48, wrote:
> I have inductive proximity switches.
They fail too. At least the unfeasibly cheap ones from eBay that I use do.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lun
I am working on a project at work where we are designing a new CNC
machine for a particular application. Up to this point I have been
planning on using a standard machine spindle.
The more I think about the actual process and needs of the machine I am
thinking that a small hole EDM drilling hea
I have inductive proximity switches. Cause I'm that awesome.
Danny
Nicklas Karlsson wrote:
> Electrical switches will eventully fail unless you use special switches which
> fail in the correct dirction, you could make it run off the screw?
>
>
> On Wed, 8 Feb 2017 17:34:17 +
> wro
Electrical switches will eventully fail unless you use special switches which
fail in the correct dirction, you could make it run off the screw?
On Wed, 8 Feb 2017 17:34:17 +
wrote:
> I don't have a physical stop on my Z axis, putting one in would be a PITA.
> The drive is exceptionally
Water have very high heat capacity and hence is good for cooling or heating.
But with water at that temperature I prefer to stay in another room.
> use of water vs electrical heaters to _stabilize_ molding temperatures.
> http://www.ptonline.com/cdn/cms/uploadedFiles/MoldTemperatureControlWhitePa
http://linuxcnc.org/docs/2.7/html/gui/gladevcp.html
JT
On 2/9/2017 7:08 PM, Gene Heskett wrote:
> On Thursday 09 February 2017 14:09:14 andy pugh wrote:
>
>> On 9 February 2017 at 17:56, Gene Heskett wrote:
>>> One of the things I would like to do is to change the full scale
>>> range of the py
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