On 12/06/2013 08:33 PM, Gene Heskett wrote:
> On Friday 06 December 2013 21:29:40 MC Cason did opine:
>
>> Gene,
>>
>> Sounds like you need a better helmet.
>>
>> I've used many different types of helmets over the years, and I
>> finally settled on a Jackson helmet, with a NexGen module (~$
On Friday 06 December 2013 21:29:40 MC Cason did opine:
> Gene,
>
>Sounds like you need a better helmet.
>
>I've used many different types of helmets over the years, and I
> finally settled on a Jackson helmet, with a NexGen module (~$400.00). I
> use the same helmet for MIG, TIG, and S
Gene,
Sounds like you need a better helmet.
I've used many different types of helmets over the years, and I
finally settled on a Jackson helmet, with a NexGen module (~$400.00). I
use the same helmet for MIG, TIG, and Stick. It's adjustable from
shades 9 to 13, and when the batteries
On Dec 6, 2013 5:53 PM, "Tomaz T." wrote:
>
> Very nice to hear someone is working on that, I can provide you some
complex 3 and 5-axis code generated from NX (siemens unigraphics), and I
can also test it on my machine to check for improvements...
> If you want, I can send you a this code I used f
Very nice to hear someone is working on that, I can provide you some complex 3
and 5-axis code generated from NX (siemens unigraphics), and I can also test it
on my machine to check for improvements...
If you want, I can send you a this code I used for this test mill of
turbine:http://www.youtub
On Friday 06 December 2013 15:28:32 Ron Bean did opine:
> >Something that since I have extensive experience with, and the
> >destruction one can cause trying to dispose of spent ferric chloride,
> >I do NOT want to be involved with ever again.
>
> The guys here etch PCBs with a mix of muriatic ac
On 12/06/2013 12:23 PM, Ron Bean wrote:
... snip
> Instead of photo resist, we use black spray paint, and etch the paint
> away with a laser cutter.
>
> We've tried cutting circuit boards with a CNC engraving machine, with
> varying results. The main problem seems to be keeping the board
> absolute
>Something that since I have extensive experience with, and the destruction
>one can cause trying to dispose of spent ferric chloride, I do NOT want to
>be involved with ever again.
The guys here etch PCBs with a mix of muriatic acid and hydrogen
peroxide, which is much easier to deal with. Googl
On Friday 06 December 2013 15:04:27 Bertho Stultiens did opine:
> On 12/06/2013 08:24 PM, Gene Heskett wrote:
> > Hence the cataract warnings that seem to surround the long IR CO2
> > models. Unforch I do have some already.
>
> Cataract inducing lasers are at ~1500nm (often Yag type lasers). The
On 12/06/2013 08:24 PM, Gene Heskett wrote:
> Hence the cataract warnings that seem to surround the long IR CO2 models.
> Unforch I do have some already.
Cataract inducing lasers are at ~1500nm (often Yag type lasers). The
1.5um is small enough to pass through the cornea and will induce
coagulat
On Friday 06 December 2013 14:22:22 Florian Rist did opine:
> Yes proper eye protection is important, but also at just 2 W and a diode
> from a DVD burner. The power density that can be reached at the retina
> is surprisingly high as soon as you deal with culminated (parallel)
> beams. So even 2 W
That is huge! Excellent work.
Dave
On 12/5/2013 11:10 PM, sam sokolik wrote:
> Robert has been working very hard on the new TP.
>
> Here is an example
> This program I found on the internet. (small line segments)
> http://electronicsam.com/images/KandT/testing/internet.ngc
>
> 533228 line prog
On 06/12/13 18:59, Gene Heskett wrote:
> On Friday 06 December 2013 13:57:04 Florian Rist did opine:
>
>> Hi David
>>
>>> iv'e try'd copper and even with 600w + it's difficult to even mark it
>> Yes, 600W is not enough. That's why a q-switched laser with short pulses
>> is needed. Pulse peek energy
On 12/06/2013 07:56 PM, Gene Heskett wrote:
>>> PS: There was a ns pulsed UV Laser (quadrupled YAG) on ebay recently,
>>> this would be the right one for the job. I was close to buying it was
>>> quite cheap.
>> unfortunatly not , copper for one will absorb the heat .
>> and for a laser to work it
Hi Gen
> Humm, thats beginning to sound like non-exportable munitions. Not to
> mention eyeball wreckers just from the reflections off the surrounding
> walls. :( Bad idea for someone not well versed in the tech.
Yes proper eye protection is important, but also at just 2 W and a diode
from a DV
On Friday 06 December 2013 14:00:58 Bertho Stultiens did opine:
> On 12/06/2013 07:07 PM, Florian Rist wrote:
> >> So my question is, to someone who may have tried/done this, is can a
> >> 1 ounce layer of copper be burned away rapidly enough so as not to
> >> leave a burned, conductive path where
On Friday 06 December 2013 13:57:04 Florian Rist did opine:
> Hi David
>
> > iv'e try'd copper and even with 600w + it's difficult to even mark it
>
> Yes, 600W is not enough. That's why a q-switched laser with short pulses
> is needed. Pulse peek energy on my laser is 25 kW, that's still not
>
On Friday 06 December 2013 13:50:36 David Armstrong did opine:
> On 06/12/13 18:10, Florian Rist wrote:
> > PS: There was a ns pulsed UV Laser (quadrupled YAG) on ebay recently,
> > this would be the right one for the job. I was close to buying it was
> > quite cheap.
> >
> >
On 12/06/2013 07:07 PM, Florian Rist wrote:
>> So my question is, to someone who may have tried/done this, is can a 1
>> ounce layer of copper be burned away rapidly enough so as not to leave a
>> burned, conductive path where the copper was?
> I tried this with two different Lasers sources:
> 120
On Friday 06 December 2013 13:46:26 Florian Rist did opine:
> Hi Gene
>
> > So my question is, to someone who may have tried/done this, is can a 1
> > ounce layer of copper be burned away rapidly enough so as not to leave
> > a burned, conductive path where the copper was?
>
> I tried this with
On Friday 06 December 2013 13:18:03 Billy Huddleston did opine:
> Burning wood, and etching metal are two different things. 30W lasers
> have a hard time etching Aluminum without a special paste applied to
> the part. I don't think a 2W laser diode will do much to a PCB except
> maybe blacken it
Hi David
> iv'e try'd copper and even with 600w + it's difficult to even mark it
Yes, 600W is not enough. That's why a q-switched laser with short pulses
is needed. Pulse peek energy on my laser is 25 kW, that's still not
enough, the one on the mentioned laser was about 1 MW. This instantly
turns
On 06/12/13 18:10, Florian Rist wrote:
> PS: There was a ns pulsed UV Laser (quadrupled YAG) on ebay recently,
> this would be the right one for the job. I was close to buying it was
> quite cheap.
>
> --
> Sponsored by Int
PS: There was a ns pulsed UV Laser (quadrupled YAG) on ebay recently,
this would be the right one for the job. I was close to buying it was
quite cheap.
--
Sponsored by Intel(R) XDK
Develop, test and display web and hybri
Hi Gene
> So my question is, to someone who may have tried/done this, is can a 1
> ounce layer of copper be burned away rapidly enough so as not to leave a
> burned, conductive path where the copper was?
I tried this with two different Lasers sources:
120 W CW CO2 Laser at 10600 µm wavelength:
Burning wood, and etching metal are two different things. 30W lasers have a
hard time etching Aluminum without a special paste applied to the part. I
don't think a 2W laser diode
will do much to a PCB except maybe blacken it a bit.
Thanks, Billy
On 12/06/2013 12:55 PM, Gene Heskett wrote:
>
Greetings;
On reading one article on the net about ripping up old dvd writers and
using the nominally 2 watt laser diode to do some wood burning etc with
them, it has occurred to me that there could possibly be a use for those
diodes in 'etching' pcb's. The article showed one mounted in a gant
Hi,
I tried out the recommended lightdm, and it worked just fine. I was able to
use a thumb drive right away, without any other process like pmount. I also
used the shut off button, and the BBB shut down properly. It all seems to work
for me.
Jeff
28 matches
Mail list logo
