Re: Through plating - double sided
2006-04-11 by Steve
... I agree. I can see things that could be taken as missing solder or bad joints, but on close inspection are just reflections fooling the eye. Steve
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Re: Using an Epson R300 to make PCBs
2006-04-11 by Steve
... for ... Well, no, but I ve never seen you but I am pretty sure you exist. ; ) Even the patents say there are resistive elements. I m not sure what you
Re: Using an Epson R300 to make PCBs
2006-04-11 by Steve
... That is very possible, however all current Canon printers use resistive heating elements. The problem with relying on the ink being conductive is that
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Codesuidae
... I don t know for sure how much ink it uses to clean the heads relative to how much it uses printing (may depend on how much ink is used per page), but it
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Stefan Trethan
... Well, them epsons actually have a small vacuum pump actively sucking the ink out of the head in the cleaning position. (or was it sucking the money out of
Re: Through plating - double sided
2006-04-11 by derekhawkins
... Nonsense! Reflections, shadows and tricks of light. The joint you claim to be missing is very much there. You have to look carefully.
Re: [Homebrew_PCBs] Comments onInkjet printing of PCB's
2006-04-11 by Alan King
... Developing should only be needed for one side of the process. Making sure to use the pos or neg resist so the printed and UV cured portion is the side
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Stefan Trethan
Ah yes, but have you actually _seen_ the resistors (in a picture or for yourself). cause, if i rember right, i had a look with a scope back than and couldn t
Re: Using an Epson R300 to make PCBs
2006-04-11 by derekhawkins
... All Epsons do to a certain extent IMO. There always seems to be a fuss and hubbub for sometime before they actually print after switching on. I only use
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Alan King
... http://en.wikipedia.org/wiki/Inkjet_printer Wiki s also a pretty good shot, but probably one of the first links from Google anyway. Problem is both are
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Alan King
... Epson, HP, and Cannon are all different tech slightly, I think you re thinking Cannon Bubblejet not HP type. Been a long time since I ve refreshed on the
Comments onInkjet printing of PCB's
2006-04-11 by Mycroft2152
Inkjet printing is the latest Holy Grail for the homebrew pcb maker. Inkjet print heads spit out the ink either through small piezo pumps or by vaporizing a
Re: Using an Epson R300 to make PCBs
2006-04-11 by Steve
... Google is your friend. In a bubble jet printer, tiny resistors create heat, and this heat vaporizes ink to create a bubble. The expansion that creates the
Re: Using an Epson R300 to make PCBs
2006-04-11 by Steve
... the ... Another problem: viscousity of the wax. All inkjet printheads are designed for water-thin ink. ... No, HP won t work because bubblejets work by
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Stefan Trethan
... k , that was something i suspected back then god knows why. You are positive on that? ST
Re: [Homebrew_PCBs] My first try failed miserably..
2006-04-11 by Stefan Trethan
On Tue, 11 Apr 2006 20:59:34 +0200, Ronald Vanschoren ... I didn t know conrad had a french operation... long time since i bought there.. Anyway, about your
Re: Using an Epson R300 to make PCBs
2006-04-11 by Steve
... inks.. And that s why I only use 3rd party bulk inks in mine... There are wide format printers that can print directly onto non-coated vinyl. They use a
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Alan King
... Build the heater into the cart. Paraffins melt in the 120-160 F range, well below many plastics. Shouldn t be hard at all. Even if the originals can t
Re: [Homebrew_PCBs] My first try failed miserably..
2006-04-11 by guja
7-10 g NaOH in 1 liter! Ronald Vanschoren wrote: ..... I developed the PCB in a NaOH solution (1 liter for 35grams NaOH). ... Yahoo!
Re: My first try failed miserably..
2006-04-11 by Steve
... http://www.conrad.fr/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&storeId=10001&productId=209546&langId=-2&parent_category_rn=18950 ... etch
My first try failed miserably..
2006-04-11 by Ronald Vanschoren
Hi all, I ve just had my first try at making a PCB and it failed :-(. Could you guys (and girls) please look to my procedure and correct me if I did something
Re: Using an Epson R300 to make PCBs
2006-04-11 by Steve
... wrote: ... think. ... No, they use a tiny resistive element. Steve Greenfield
Re: [Homebrew_PCBs] Re: Through plating - double sided
2006-04-11 by Jacques Meunier
Hello i disagree for solder quality, very bad work. Cold solder, not enough solder, solder joint missing (lower side of the 2K2 resistor near the tantalum
RE: [Homebrew_PCBs] Re: Through plating - double sided
2006-04-11 by Alan Marconett
Hi, I hope that wasn t ACID paste! Not normally used on electronic circuits! Alan KM6VV
Re: Through plating - double sided
2006-04-11 by derekhawkins
... Search these archives on plumber s solder paste
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Stefan Trethan
... There s no way on earth paraffin will go through the epson printhead. How would you keep the plastic parts hot enough to even keep it liquid? HPs even need
[Homebrew_PCBs] Re: Through plating - double sided
2006-04-11 by Robert Hedan
I was wondering if that was the results of a no-clean type of solder, I ve never used those before. Robert ... De : Homebrew_PCBs@yahoogroups.com
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Alan King
... And what would be really good to try would be the parrafin. But of course, Epson with the easy CD tray also has permanent seperate heads, which would be
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Alan King
... Epson is notorious for wasting 30% of the ink for cleaning the heads. This printer cleans the heads on its own about every time it s used, even only hours
Re: [Homebrew_PCBs] Re: Through plating - double sided
2006-04-11 by Stefan Trethan
On Tue, 11 Apr 2006 19:36:22 +0200, Robert Hedan ... guess he washed it? ST
[Homebrew_PCBs] Re: Through plating - double sided
2006-04-11 by Robert Hedan
What brand soldering paste? And what process did you use to tin the board? And what brand/model solder was it? Those joints are beautiful, no ugly residue
Re: Through plating - double sided
2006-04-11 by derekhawkins
... The board was tinned with plumber s solder paste, after that it was just a soldering iron and .015 solder from Radio Shack of all places.
Re: Using an Epson R300 to make PCBs
2006-04-11 by derekhawkins
... And Gabriel said to Mohammed....READ!....READ! ... I m not interested in any process that prints directly to copper.
[Homebrew_PCBs] Re: Through plating - double sided
2006-04-11 by Robert Hedan
Derek, What do you use to get such clean soldering? Robert ... De : Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] De la part de
Re: Through plating - double sided
2006-04-11 by derekhawkins
... Looks like I broke all the rules then (Eagle). Here is an example where there is no such thing as a dedicated solder and component side. It s a mix of thru
Re: [Homebrew_PCBs] Question about ICs
2006-04-11 by Stefan Trethan
... DIPs are for 14 pin usually all the same, the larger ones come in two different widths which can lead to nasty mistakes... To be sure you can always check
Re: [Homebrew_PCBs] Re: Using an Epson R300 to make PCBs
2006-04-11 by Stefan Trethan
... With epson _inkjet_ transparencies i assume. These are specially coated to absorb the ink, the PCB isn t. I tried red staedtler ink in a epson head, which
Question about ICs
2006-04-11 by alan00463
I have a basic question about through-hole technology: Are all 14 pin DIP s have the same footprint? 8 pin DIP s? Or does it depend on the technology (CMOS,
Re: Using an Epson R300 to make PCBs
2006-04-11 by derekhawkins
... I have a R320 and the ink works fine with Epson s transparencies. That ink doesn t clog the nozzles easily either, I m yet to clean the heads yet and usage
Re: [Homebrew_PCBs] Re: Pigment-based ink as resist?
2006-04-11 by Lez
... Epson 900 has a flat path from back to front for its a4 cd tray, but the ink is useless. Now if a replacement ink / soluble wax could be put in the
Re: Pigment-based ink as resist?
2006-04-11 by derekhawkins
... Not that desperate, already have a 2200. Not interested in a flatbed plotter either.
Re: My first PCB (photo-resist).
2006-04-11 by derekhawkins
... Which positive boards are you using or are you using a spray for resist?
Re: [Homebrew_PCBs] Re: Pigment-based ink as resist?
2006-04-11 by Stefan Trethan
... conversion of almost any printer, even a wrap-around one, would for many of us be no more than an afternoons job. The tricky bit is the ink... If you
Re: Pigment-based ink as resist?
2006-04-11 by derekhawkins
... For someone unsatisfied with their current process perhaps. Whatever, an inkjet printer with a straight path able to handle 1/16 media isn t exactly
Re: [Homebrew_PCBs] How long does anhydrous FeCl3 stay anhydrous
2006-04-11 by Stefan Trethan
On Tue, 11 Apr 2006 13:10:59 +0200, Kamal Shankar ... Back then when i bought FeCl it came in vacuum packed PE bags with just enough in each for making up one
How long does anhydrous FeCl3 stay anhydrous
2006-04-11 by Kamal Shankar
Guys, can you give me a rough idea about how long the Ferric Chloride powder remains powder before turning to thick liquid ? I am used to purchasing FeCl3 in
Re: [Homebrew_PCBs] Re: My first PCB (photo-resist).
2006-04-11 by Stefan Trethan
On Tue, 11 Apr 2006 10:34:45 +0200, patroclus04 ... i don t do photo any more, but to me it seemed pretty sturdy and i used to rub it.
Re: My first PCB (photo-resist).
2006-04-11 by patroclus04
So, if I try to clean SOFTLY the PCB while developing, I will not ruin it ?? It seemed to me that last time my borders got bad definition and I was thiking of
Re: My first PCB (photo-resist).
2006-04-11 by patroclus04
Sorry, I meant 5mm glass. I made my transparency with inkject transparency paper, using a inkjet printer. It came out pretty well, and as I sais, I made two
Re: [Homebrew_PCBs] Re: Pigment-based ink as resist?
2006-04-11 by Stefan Trethan
... If it would work i think the advantages are undisputed. The thing is - it doesn t work, yet, so ... ST