Re: won a plotter on ebay
2006-11-20 by Steve
... Yes, it ll be 25 pin. You will also need to wire up an adapter as the pins aren t quite standard. Yes, it s very important that it be serial. HP plotters
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Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Stefan Trethan
On Mon, 20 Nov 2006 21:03:39 +0100, Edward Slatt ... Both are similar, i think Xn in dry form and C as solution (but i m not at all sure).
Re: Screen printing emulsion
2006-11-20 by Steve
... photo resist for PCB fabrication? I have an order in with my neighbor for some from his shop. I m going to give it a try, just want some input from anyone
New file uploaded to Homebrew_PCBs
2006-11-20 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File :
Re: [Homebrew_PCBs] Screen printing emulsion
2006-11-20 by Dave King
Are you talking about using the silkscreen process itself or just the inks? A friend of mine silkscreens a tar through the screen and etches away. Don t know
Re: [Homebrew_PCBs] Screen printing emulsion
2006-11-20 by Lez
... How do you plan to get it on the board? Lez
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Lez
... Can I just take the vodka, I find after vodka I dont really care about pcb s and fecl Lez
Re: [Homebrew_PCBs] CNC and UV leds
2006-11-20 by Mike Young
There s an idea. Use a laser plotter to burn the resist, rather than mill around the traces. Or burn the traces, and plate before chemical etching. Alas, I
Re: DIY Etching Tank
2006-11-20 by Andrew
Fresh Ferric Chloride (before having copper in it) is probably less dangerous than stuff you have in your drinks cabinet. I know if I was offered a nice fresh
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Lez
... Well I have 2 sharpies here, uk WHS ones, one has a pull off lid, the other has a push button action, the pull off lid (blue) seems to draw better, as
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Lez
... Lol I use fe, etch in a tuppaware tub, never heat it just leave it at ambient (15c) room and etching takes about 15-20 minutes, when I ve done I get my
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Edward Slatt
Where does Ammonium Persulfate rank with under the kitchen sink substances in terms of danger? The Not in the house post is a little scary. Ed Slatt
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Lez
... Thats one thing I thought about with the calcomp, as its got strong motors to cope with the weight of a directly fitted drill or the stiffness of a flexi
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Stefan Trethan
On Mon, 20 Nov 2006 20:06:52 +0100, Dan Pickard ... Staedtler specifically formulated some inks for laboratory use to mark glassware
[Homebrew_PCBs] Screen printing emulsion
2006-11-20 by Dan Pickard
Has anyone ever tried using silk screen printing emulsion as a cheap photo resist for PCB fabrication? I have an order in with my neighbor for some from his
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Stefan Trethan
On Mon, 20 Nov 2006 19:17:55 +0100, Roland F. Harriston ... You ll probably have more dangerous substances under the kitchen sink than FeCl. With CuCl heating
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Dan Pickard
I had thought I might experience drag causing the plot(scratch) to be erratic so I had decided to get an etch resist pen in ready for when it comes, I found
Re: [Homebrew_PCBs] Re: won a plotter on ebay
2006-11-20 by Lez
... no I paid for it yesterday va paypal so if I m lucky and he shipped it today then I should get it thursaday morning, allowing two days etc, unless he
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Roland F. Harriston
Most chemical reactions speed up when heat is applied. Chemistry 101. Nearly all of the commercial/industrial PCB etch tanks have heaters regardless of the
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Lez
... Thanks. I had thought I might experience drag causing the plot(scratch) to be erratic so I had decided to get an etch resist pen in ready for when it
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Roland F. Harriston
Duh! FeCl will vaporize and eat away at the copper and other metals in the microwave oven circuitry. Some vaporization or misting will take place even if the
Re: won a plotter on ebay
2006-11-20 by Steve
... Search the archives for Scratch and Etch . Why use an emergency window hammer? You can buy replacement tips in carbide or diamond tip for metal marking
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Stefan Trethan
... Nobody says microwave heating is required, or even preferred, for FeCl etching. You can use just about any heat source and rig something up. Also, you do
Re: [Homebrew_PCBs] Re: DIY Etching Tank
2006-11-20 by Adi Linden
... There is no way I ll be cooking FeCl in anything that will ever see food again. So a dedicted microwave would be the only way to heat etchant in small
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by DJ Delorie
I wonder if you could mount a dremel tool or dentist s drill on it, and just carve away the unwanted copper...
[Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Dan Pickard
Hello, I don t have a lot of time so I ll make my two cents quick. I bought a Roland 1100 xy plotter from ebay. I found that Free CirCAD 98 works great with
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Lez
... Thanks, but with ableview I can now see that I have a valid hpgl, that I made this morning, but the ones I made last week, are not valid, they were all
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Leon Heller
... From: Lez To: Sent: Monday, November 20, 2006 10:57 AM Subject: Re: [Homebrew_PCBs] won a
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-20 by Lez
Lol I can see I m going to have fun over the next week or so with this new plotter........ One idea that has just comeint my head was to cover the board with a
RE: [Homebrew_PCBs] CNC and UV leds
2006-11-20 by Peter May
I am wanting to try it. Will order a uv led next couple of days and try some expsures etc. I saw the article on the UV Led light box in an English mag and
Re: [Homebrew_PCBs] CNC and UV leds
2006-11-20 by Paul Symansky
That s an interesting idea... You can only focus UV light just as much as you can focus visible light, but there are cheap lasers that emit light in the UV
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-19 by Stefan Trethan
... That won t be the problem, it can easily move a sheet of cardboard and a pcb stuck to it. If you are gonna stick a full sized pen in it you need to replace
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-19 by guja
heh. it is not true x/y flatbed. ... Sponsored Link Mortgage rates as low as 4.625% - $150,000 loan for $579 a month. Intro-*Terms [Non-text portions of this
Re: [Homebrew_PCBs] won a plotter on ebay
2006-11-19 by Stefan Trethan
... That s the very plotter i tried. You can find the pinout somewhere on the web, i believe HP. Just remove the plastic flip cover, no need to cut anything.
won a plotter on ebay
2006-11-19 by Lez
Well I have won a new plotter on ebay, its a HP7475A, I have seen conversions on the web which just consist of cutting a slot in the plastic so a taller etch
Re: DIY Etching Tank
2006-11-19 by Len Warner
... Be sure either to follow the pump directions and either install a non-return valve in the airline or site the pump above the liquid height. Otherwise,
Re: [Homebrew_PCBs] Re: Ultrasonic etching tank?
2006-11-19 by Stefan Trethan
On Sun, 19 Nov 2006 12:26:14 +0100, Len Warner ... Maybe one can also get something useful from medical surplus, i ve seen such moving
Re: [Homebrew_PCBs] Re: Ultrasonic etching tank?
2006-11-19 by Leon Heller
... From: Len Warner To: Sent: Sunday, November 19, 2006 11:26 AM Subject: [Homebrew_PCBs] Re:
Re: Ultrasonic etching tank?
2006-11-19 by Len Warner
... There used to be a photographic darkroom aid for print-making which rocked the dish to create wave motion to ensure even developing or thorough fixing. It
Re: Any info about this technique?
2006-11-19 by Len Warner
... You won t get anywhere near as much energy assist from burning(?) FR4 (Fire Resistant grade 4) fibreglass in 60psi air as from burning molten steel in
Re: [Homebrew_PCBs] Direct toner print
2006-11-19 by Lez
... Worth a try tomorro, I ll have time for that....
CNC and UV leds
2006-11-19 by Peter May
Hi all. I recently saw a few articles on using UV leds to expose photoresist type boards and have to admit, I have tried various methods and am going to try
Re: [Homebrew_PCBs] DIY Etching Tank
2006-11-18 by Adam Seychell
... Good question. I sometimes find the microwave/paintbrush approach does me fine for quick and dirty single sided PCBs. Not saying the etch quality is bad.
Re: [Homebrew_PCBs] Direct toner print
2006-11-18 by Stefan Trethan
... Just etch the aluminum foil. Stick tape to the back to protect it. Use little etchant and dispose, since the AL might not be great in your regular etchant.
Laser cutting?
2006-11-18 by William Carr
I was just wondering... Laser engravers are getting more common. Has there been a review on how well it works for PCB s ? William
Re: [Homebrew_PCBs] Direct toner print
2006-11-18 by Lez
... Well with phot ret turned off, darkness set to 5 and image enhance off, I get very dark tracks on the ally foil, but I cant get copper through, it wont
Re: DIY Etching Tank
2006-11-18 by jr_dakota
I made one from a 5 buck plastic aquarium from Walmart and an old aquarium air pump ... It has a plastic grate that goes in the bottom so I took a piece of
Re: [Homebrew_PCBs] Ultrasonic etching tank?
2006-11-17 by Christopher Hart
... That would require me watching the boards constantly. I frequently have many projects going at once, and I just work on another while waiting for the
Re: [Homebrew_PCBs] Ultrasonic etching tank?
2006-11-17 by Christopher Hart
Seems to be the combination. Without the heating, it takes about 5 minutes. When I do the larger boards, I have a problem of heavily used etchant sitting right
DIY Etching Tank
2006-11-17 by Adi Linden
Will aquarium supplies do for building a DIY etching tank? I am thinking air pump, heater, air hoese, etc. I am torn between building a small vertical etch