Re: If you do buy an HP G/L plotter
2002-04-04 by caveteursus
1)You can t use the HP pen s they aren t waterproof. Others have suggested using modified Staedler waterproof pens. 2) The plotter speed can be explicitly
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Just a thought!
2002-04-04 by crankorgan
Hi. What if, you took a surplus plotter. Put a sensitized board on the plotter in a dark room. Replaced the pen with a focused light source that turned on and
Re: [Homebrew_PCBs] Re: UV Light Source for Exposing PCB's
2002-04-04 by Zoran A. Scepanovic
Hello crankorgan, Thursday, April 04, 2002, 2:57:25 PM, you wrote: c Hi, c Years ago I tried to locate a UV light to erase Eproms. I c got alot of bad
Re: [Homebrew_PCBs] UV Light Source for Exposing PCB's
2002-04-04 by Zoran A. Scepanovic
Hello Tim, Thursday, April 04, 2002, 5:25:55 PM, you wrote: TG Even better is to get some real flourescent UV bulbs. I got mine from a TG local lighting
Re: [Homebrew_PCBs] UV Light Source for Exposing PCB's
2002-04-04 by Ian
You may be able to get uv lamps from catering suppliers as we use them in uv fly killers. Ian ... From: Tony Jeffree To:
Re: [Homebrew_PCBs] UV Light Source for Exposing PCB's
2002-04-04 by Tony Jeffree
I guess the other obvious place to look for these lamps is the supplier you use to purchase other PCB-making goods (board, developer, etc.). The suppliers I
Re: [Homebrew_PCBs] UV Light Source for Exposing PCB's
2002-04-04 by Alan Marconett KM6VV
Hi John, What you want is called a germicidal lamp . It is a clear glass fluorescent lamp. Mine is about 14 inches long. I bought it and a holder for about
Re: [Homebrew_PCBs] Re: UV Light Source for Exposing PCB's
2002-04-04 by Steve Greenfield
It takes only low UV to expose the photoresist used for PCBs. So a blacklight will work, however, anything that gives off low UV will work. Like plant grow
Re: [Homebrew_PCBs] UV Light Source for Exposing PCB's
2002-04-04 by Tim Goldstein
Even better is to get some real flourescent UV bulbs. I got mine from a local lighting supply house. I just looked for light bulbs in the yellow pages. The
Methods and links
2002-04-04 by Steve Greenfield
... Please check out the bookmarks section. I went to a lot of trouble to organize it. There are links there for all kinds of methods, and as far as etch
Re: [Homebrew_PCBs] UV Light Source for Exposing PCB's
2002-04-04 by Steve Greenfield
... -snip- ... It has been a while since I did photoresist, but I used to use an incandescent plant grow light. I suspect the fluorescent grow lights give off
Re: UV Light Source for Exposing PCB's
2002-04-04 by crankorgan
Hi, Years ago I tried to locate a UV light to erase Eproms. I got alot of bad info. The Blacklight for posters is not the right wavelength. UV bulbs look like
UV Light Source for Exposing PCB's
2002-04-04 by johnman9146
Several of you have written of the benefits and good quality that can be had by using the photoresist copper clad boards. You now have my interest. I have
Re: Printing PCB boards
2002-04-04 by johnman9146
... field ... to ... also ... best. ... from an ... various ... good job ... they ... because ... water ... work ... and do ... HP ... I m not looking for ink
Re: If you do buy an HP G/L plotter
2002-04-04 by johnman9146
I already own one. I tried using it before, but didn t like the results. I even modified a couple of pens as I thought this might be an easy way to draw
If you do buy an HP G/L plotter
2002-04-04 by caveteursus
like the HP7475a which I own, I ve written some code to also use it as an XY pen-plotter.
Re: Printing PCB boards/inks/ink tech
2002-04-04 by caveteursus
There was a company in West Hartford CT which was pioneering a piezo ink-jet head with extremely fine resolution -- Accent Color Sciences (now bankrupt).
Re: [Homebrew_PCBs] Re: Printing PCB boards
2002-04-04 by Adam Seychell
... How much knowledge to you have on ink formulations ? Its an entire field of expertise. Inkjet ink chemists are specialized people. You want to develop your
Re: [Homebrew_PCBs] Printing PCB boards
2002-04-03 by derryck@ntlworld.com
From: JanRwl@AOL.COM ... All I can say is that I ve never had a problem with the Kyocera laser printer I use, even SMD fingers seem to come out properly. Suck
Re: [Homebrew_PCBs] Re: Printing PCB boards
2002-04-03 by Russell Shaw
There s good printers and crappy printers. Crappy: lasers, many inkjets. Good: epson stylus colour. I did various comparisons. The main thing with the epson
Re: Printing PCB boards
2002-04-03 by johnman9146
That kind of misses the point. I am looking to see if anyone knows of a suitable etch resist ink, and/or a suitable soldermask ink. If I do decide to go your
Re: [Homebrew_PCBs] Printing PCB boards
2002-04-03 by Russell Shaw
... I use an epson stylus 400 colour inkjet and genuine epson transparency. It s easy to do 8mil tracks/spacing, and there s no dimensional problems. There s
Re: [Homebrew_PCBs] Printing PCB boards
2002-04-02 by Adam Seychell
In general inkjet printers give far superior dimensional stability than laser printers. The repeatability and accuracy across an A4 page is under 0.1mm on my
RE: [Homebrew_PCBs] Printing PCB boards
2002-04-02 by Dave Hylands
When you print to a laser printer, the paper gets heated causing the paper to expand. The moisture also gets driven out, which I believe causes the paper to
Re: [Homebrew_PCBs] Printing PCB boards
2002-04-02 by Steve Greenfield
... I used to use a Canon 610, it was not symmetrical and printed slightly smaller than it was supposed to. Haven t tested my Canon 6000 to any high degree of
Spam and Yahoogroups
2002-04-02 by Steve Greenfield
Hello Everyone, Recently, Yahoo has change it s policy on sharing user information with third parties. How does this effect us? They will provide your
Re: Milling Circuit Boards
2002-04-02 by crankorgan
Steve, You can use Corel. I use Turbocad. Make sure that you draw the trace all the way around and make it overlap onto itself a short distance. This
Re: [Homebrew_PCBs] Printing PCB boards
2002-04-02 by JanRwl@AOL.COM
In a message dated 02-Apr-02 05:36:45 Central Standard Time, ... But this assumes the PRINTER will make an exact 1:1 duplicate of the artwork you draw on
Re: Gerber and Excellon to DXF
2002-04-02 by crankorgan
Hi, Check out KCam at: http://www.kellyware.com/index.shtml John ... program to
Re: Gerber and Excellon to DXF
2002-04-02 by electronic_workshop
If you are planning to buy Easy-PC I still have the latest version for sale. I had it for sale at Ebay for several weeks but no one wanted it. Here s a link to
Re: [Homebrew_PCBs] Gerber and Excellon to DXF
2002-04-02 by Tony Jeffree
... I use Easy PC, which is capable of outputting DXF and which has an add-on module that can import Gerber. http://www.numberone.com/ Regards, Tony
Gerber and Excellon to DXF
2002-04-02 by milwiron@terrorbydesign.com
Does anyone know of an effective and reasonably priced software program to convert Gerber and drill files to DXF? Thanks for any shove in the right direction,
Re: [Homebrew_PCBs] Re: Milling Circuit Boards
2002-04-02 by Steve Greenfield
Good point. I m used to using CorelDraw and a vinyl cutter so it draws it differently, I guess. I make sure and join all objects that touch so the path is only
Re: [Homebrew_PCBs] Printing PCB boards
2002-04-02 by derryck@ntlworld.com
From: johnman9146 ... Im my opinion you re much better off using photoresist coated boards. Print your layouts using the right
Printing PCB boards
2002-04-02 by johnman9146
I am new to this group and I have been tinkering around with making hobby PC boards for a couple of years now (I am no pro nor do I claim to be). I have tried
Re: Milling Circuit Boards
2002-04-02 by crankorgan
Steve, An other thing about using a plotter. If you use PLT files, you will end up with pads and traces but they won t be connected. When a plotter draws pads
Re: Milling Circuit Boards
2002-04-02 by crankorgan
Hi Steve, When you use a plotter to draw on the copper you have to be able to slow the plotter down. If you don t the ink will not flow fast enough. Over the
Re: [Homebrew_PCBs] Re: Milling Circuit Boards
2002-04-02 by Steve Greenfield
Good point about speed of pen-up and -down. Oops, you re Kleinbauer. I know a Nachbauer who makes Theremins, hence my mistake. I did try a Staedler 313 (Red)
Re: Milling Circuit Boards
2002-04-02 by crankorgan
Steve, Don t take the plotter apart until you look at: http://www.qsl.net/ve2emm/pcb/pcbe.html Also, hooking up a Dremel or other tool to a Plotter has a
Re: [Homebrew_PCBs] Re: Milling Circuit Boards
2002-04-01 by Steve Greenfield
My concern was that it was becoming personal. Tony, your website looks like you are pretty advanced. Is it possible that John s paper is aimed more at the
Re: [Homebrew_PCBs] Re: Milling Circuit Boards
2002-04-01 by Tony Jeffree
Steve - It is unfortunate that this has ended up as a slanging match, and I apologize for my part in that. My intention, when I saw what looked like a pretty
Re: [Homebrew_PCBs] Re: Milling Circuit Boards
2002-04-01 by Steve Greenfield
John, let comments like his roll off your back like water off a duck. Don t return insult for insult, either of you. I like John s principles- use good-enough
Re: Milling Circuit Boards
2002-04-01 by crankorgan
Tony, Learn to read! $20 not $35. My 4th axis Pooka can be built with hand tools. To build your designs a person needs a machine shop. Lets face it your
Re: [Homebrew_PCBs] Re: Milling Circuit Boards
2002-04-01 by Tony Jeffree
... You re right, and my heart bleeds for you. However, even subtracting the shipping, it was an expensive way of buying 15 sheets of paper - and at least if
Here is the link
2002-04-01 by electronic_workshop
http://hans-w.com/modular.htm
CNC design for free
2002-04-01 by electronic_workshop
Many peole have built my stepper motor drivers. I posted all schematics and artwork for free... Best Regards Hans W
Re: [Homebrew_PCBs] Re: Milling Circuit Boards
2002-04-01 by Steve Greenfield
Now, let s not all get cranky. No pun intended. Well, OK, pun intended. Moderator __________________________________________________ Do You Yahoo!? Yahoo!
Re: Milling Circuit Boards
2002-04-01 by crankorgan
Tony, You should also say the $18 included shipping and handling to your country. You left out your shipping but I still shipped. One year has passed. I have
Re: [Homebrew_PCBs] Milling Circuit Boards
2002-04-01 by Tony Jeffree
... ...and I see you are still charging $18 for your thin little booklet too. To potential purchasers of this booklet...as far as I can tell from having paid
Milling Circuit Boards
2002-04-01 by crankorgan
Hi, You can mill circuit boards using a homemade machine and a Dremel type tool. I use a Dremel set on number 3. My feed rate is 6 per minute. I have a