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Page 682 of 707 · 35337 messages matched
2003-02-21 by rolanyang <rolan@hacksrus.com>
I ve seen some posts here about people doing the Laser Printer heat toner-transfer to PCB with the special sugar coated paper, but I ve been doing it for quite
2003-02-17 by Adam Seychell
Try it on small scale and see if it works. I wonder where all the iron ions go ? Iron goes in and none comes out !. My guess is you end up with lots of
2003-02-14 by Steve Greenfield
... He seemed to mean nails for both sides. It is in the part you trimmed: One terminal corrodes away (putting the Fe back), the other terminal plates out
2003-02-14 by caveteursus <j.walton@amlp.com>
It s actually the HCl (hydrochloric acid) which combines with the copper to form CuCl2 + H. This is why it s not a good idea to etch on a stove -- hydrogen
2003-02-14 by caveteursus <j.walton@amlp.com>
here s a link from QSL NET http://www.qsl.net/iz7ath/web/02_brew/14_howto/02_clor/
2003-02-14 by JanRwl@AOL.COM
In a message dated 2/14/2003 12:00:09 PM Central Standard Time, ... are the nails +? Or, do you mean you used nails for both electrodes??? Jan Rowland
2003-02-14 by Steve Greenfield
Someone on the Seattle Robotic list said he recharges his FeCl. Here s what he said: ***************** I have not thrown out FeCl in 12 years. I keep
2003-02-13 by Firecracker Firecracker
Has anyone used Autocad for designing PCB for surface mounted technology? Can anyone send me a dwg with blocks for designing PCB for SMT with autocad? Thanks
2003-02-11 by Robert Staley
Has anyone seen the new Epson 960 printer? It can handle 1.5 mil posterboard and also print on CD Roms so it might be able to use a thin pcb material. I was
2003-02-09 by Russell
... You could increase the exposure time to compensate too.
2003-02-09 by Russell
... The gaussian form of the lens equation is: 1/f = 1/d(source) + 1/d(target), so the film should be 315mm from the lens and the pcb printout should be 630mm
2003-02-09 by James Owens
Hi, I have a lens which came from a 3 x3 process camera. It is 210mm focal length. Is this information any use? I used lithe film when I did my boards that
2003-02-09 by Ron Amundson
Russell, I keep forgetting that unlike production optics, a home brew design has the flexibility to increase illumination. I don t know that I d use cardboard
2003-02-08 by Russell
... If you have trouble with spherical aberration from a simple lens construction, then making the aperture smaller will fix that (card-board with hole against
2003-02-08 by Bill Higdon
If you check around you might be able to find an old offset press camera for very little, they were used to make the plates. It seems a computers, scanners and
2003-02-08 by Ron Amundson
It would be a lot easier to by a used process camera than to try and build your own system for reduction. There are lots of business closing doors in this
2003-02-08 by Steve Greenfield
One thing you must take into account is chromatic abberation. So if you just make this using a simple lens you may run into problems of fuzzy edges even at the
2003-02-08 by jackafaz <greeneaz@earthlink.net>
Hi, As a fun project I thought I would build a Large Format Camera to use for 2:1 reductions of artwork for PCB s. I bought a book From Lindsay Simple Large
2003-02-03 by Russell
... I ve tried etching thin copper and brass shim with ferric chloride and found it s a *lot* harder than the copper on pcb. Think its got something to do with
2003-02-03 by sir_tancred <gary.mort@ool.wd1.net>
I m a bit curious. I ve read online about Photo Etch setups, and one thing that seems popular is an acid solution that grows as you use it, basically it uses
2003-02-02 by david_mucha <david_mucha@yahoo.com>
Hi All, I am thinking of selling the T-Tech units I got and making my own etcher. what software do you all use to create the lines around traces for milling
2003-02-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder, please read: Subject lines: Remember to change the subject line if you are straying from the original thread. Please change the subject line
2003-01-25 by Eduardo Perdomo
http://www.geocities.com/pancary/win95io.zip i forgot this dll , put it in windows system directory ... http: www.geocities.com pancary Home Build Plotter
2003-01-25 by Eduardo Perdomo
http://www.geocities.com/pancary/cnc.zip ... http: www.geocities.com pancary Home Build Plotter Driver
2003-01-24 by Steve Greenfield
You can just go to his website and download it. Steve ... __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful.
2003-01-24 by twb8899 <twb8899@yahoo.com>
Ron, Can you be more specific concerning mouse bites? Are you referring to the break tabs with small drilled holes for multi-up panels? I may be able to help
2003-01-24 by Ron Amundson
Years ago when I was in manufacturing, we had problems with mouse bite breakaparts causing stress on the pcb with resultant solder joint failure. I m now
2003-01-23 by Cristian
I m interested, too. Cristian
2003-01-22 by Steve Greenfield
... Can you post it to the Files section of the list? BTW, your link is incorrect in your signature. Your slashes are backwards. ...
2003-01-22 by Eduardo Perdomo
Sorry, get translation: I send the screen of my cnc program, if you want test it , i can send to you by email , about 1.2 MB http://www.geocities.com/pancary
2003-01-22 by Adam Seychell
... thanks, yep the DF sounds similar to what I and most PCB manufactures use. ... No, the shelf life I was talking about was only after being applied to the
2003-01-22 by Ron Amundson
Its a dry film negative acting materal. Please see http://www.kepro.com/cprecut.htm for details. How do you apply your own dryfilm, do you have a laminator,
2003-01-22 by JanRwl@AOL.COM
In a message dated 1/21/2003 2:00:28 PM Central Standard Time, ... Touche and kudos, Steve! I.e., RIGHT ON !!! [Non-text portions of this message have been
2003-01-22 by Adam Seychell
I once tried to built a bubble agitated developer but found the bubbles could not reliably remove the dry-film from the board. In the end I found best results
2003-01-21 by Steve Greenfield
The list language is english. Steve ... __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
2003-01-21 by Ron Amundson
I ll give the brush solution a try tomorrow. As I purchase my boards pre laminated with dry film, I m sure cleanliness is not the issue, but underdeveloped dry
2003-01-21 by twb8899 <twb8899@yahoo.com>
Ron mentioned in a previous post that he was getting uneven etching with ferric chloride. When this happens it s usually due to under development of the
2003-01-21 by twb8899 <twb8899@yahoo.com>
Adam, The sulfuric acid was like a thin syrup and was used at room temperature. It would take on a slight red-brown color as the epoxy level built up. We used
2003-01-21 by Russell
... I only use ferric chloride. Normal double-sided 1oz Cu pcb etches between 5mins for new solution, and 12+mins for old solution when i ditch it. I dilute it
2003-01-21 by Zoran A. Scepanovic
Hello Ron, 21. January 2003, 06:27:25, you wrote: RA I need to dig up the data sheet for a better explanation, and I ll post it RA later. RA I am howver
2003-01-21 by Eduardo Perdomo
Segue anexo tela do prg, pra quem quiser testar mando por email , 1.2 mb
2003-01-21 by Ron Amundson
I need to dig up the data sheet for a better explanation, and I ll post it later. I am howver interested in your findings with ferric chloride. I ve got some
2003-01-21 by Adam Seychell
I use ammonium persulfate which I think behaves almost identical to sodium persulfate, I have read there are some subtle differences with etching between the
2003-01-20 by david_mucha <david_mucha@yahoo.com>
If teh sheets are larger than the boards, yo ucan use the printers alignment. an X in each corner, wider than the boards. just line up the X s. If you
2003-01-20 by victorf57@cox.net
use a tac to align then tape. regards victor
2003-01-20 by larrwill202wl <larrwill202wl@yahoo.com>
I have had success making single sided boards with Press-n-Peel blue but am unsure about making two sided. Is there a trick to properly aligning the sides of a
2003-01-20 by Ron Amundson
For some reason this didn t get posted last week, my apologies if it shows up twice, but I m making boards on Wednesday, and would like some input. In my Kepro
2003-01-20 by mnphysicist <ron_amundson@hotmail.com>
It makes a world of difference in critical analog circuitry and in digital circuit to reduce EMC issues. With the ground plane, you reduce the inductance of
2003-01-20 by Adam Seychell
... Yep, I understand. Thakns ... Wow, concentrated sulfuric acid !. Wasn t this a little dangerous working with ? Was it heated or at room temperature ?
2003-01-20 by Adam Seychell
... I haven t seen these motors running my self, but I know they carry a hefty price tag (secondhand AUD$2500) and suck a lot of juice. I learned this when I