Re: Your Wire EDM
2005-09-27 by Curtis Richards
... Hi Richard, Sorry about the delay in my PCB EDM work but I ve been rebuilding a 1954 Willys Pickup! The town I live in does not like unlicensed vehicles
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Re: cheap photo etching strikes back
2005-09-27 by Bob_xyz
Thanks for the clarification. I had misunderstood what you were saying. I m a bit surprised that screen cleaner attacks copper since it s used to clean
Re: cheap photo etching strikes back
2005-09-27 by hjf2k2
sorry, I didn t express myself clearly. the residue is there after developing but before going into ferric chloride. to finally remove the emulsion, i do use
Re: cheap photo etching strikes back
2005-09-26 by Bob_xyz
Have you tried using the screen cleaner solvent that s specifically made for removing the photo emulsion from silkscreens? I have no idea what chemicals are in
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-26 by turbojet
There ARE a clamping bar! Admit that you are wrong Mr. Phil! For me this topic is closed. Have a nice day! ... From: Phil To: Homebrew_PCBs@yahoogroups.com
cheap photo etching strikes back
2005-09-26 by hjf2k2
Hi all, It s me again. I ve been busy for a couple of months now, but I accidentally have perfected the cheap photo etching method I posted a few months ago.
Desoldering
2005-09-25 by Adam Seychell
... Interesting. Although their web site has no mention of application to through hole components. For SO8 and bigger you just need to get some 2mm diameter
Re: Reproducing Unavailable Circuit Boards
2005-09-25 by Steve
... wrote: ... those ... component ... There is also ChipQuik. Melt ChipQuik onto the existing solder, and the parts almost fall out. Basic idea is that it is
Re: [Homebrew_PCBs] Re: Silk Screen Printing overlays
2005-09-23 by Adam Seychell
Hi Bob, it was a long time ago, but from what I remember the emulsion was nothing special, just common silk screen emulsion. Color was red and smelled a bit
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-23 by earlj.morris@verizon.net
... Since you have the schematic you should be able to functionally replace the board using a uProcessor with flash memory, such as the Zilog z8 Encore or a
Re: Silk Screen Printing overlays
2005-09-23 by Bob_xyz
Adam - What emulsion did you try and what was your etchant? I seem to recall a discussion on this topic recently but I m not sure any conclusions came of it.
Re: [Homebrew_PCBs] Silk Screen Printing overlays
2005-09-23 by Adam Seychell
Thanks Ron the informative reply. Silkscreening a one off PCB is like I figured, lots of messing around. I suspect it would add another hour to two of labor. I
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-23 by ron amundson
... One other concern. Can you still get the parts? A lot of logic at that time is no longer made. Most newer parts have much faster risetimes, and as a
Re: [Homebrew_PCBs] Silk Screen Printing overlays
2005-09-23 by ron amundson
... Its rare that I will add the overlay, but I do have the capability of doing so. Here are a few things I found. 1. Use orange screen, as it reduces ghosting
Re: Reproducing Unavailable Circuit Boards
2005-09-23 by Bob_xyz
... Ouch! That hurts. That would take quite a bit of work to re-create the board with an EDA package. I don t know that there s any program that can convert
Re: Reproducing Unavailable Circuit Boards
2005-09-23 by Tony
Bob, Unfortunately, the schmatic is on several sheets of 8.5 x 11 paper. ... Tony ... imported
Re: [Homebrew_PCBs] Buying new printer for TT
2005-09-23 by Stefan Trethan
... I wonder if color toner would work in a B/W printer? I prefer printers where the drum gets exchanged with the toner, personally. If the drum is still good
Buying new printer for TT
2005-09-23 by Lez
Thinking of treating myself to a new laser, would prefer a colour, any suggestions or any info on if colour works with TT Or should I replace my 4l with a BW
Re: Reproducing Unavailable Circuit Boards
2005-09-22 by Bob_xyz
Even less if the schematic is in electronic form and can be imported into an EDA program. Remember - You don t have to own a fancy autorouter so long as
Re: [Homebrew_PCBs] Silk Screen Printing overlays
2005-09-22 by Stefan Trethan
On Fri, 23 Sep 2005 00:08:58 +0200, Andrew Mawson ... i do toner transfer it. wonder if colored toner would work in a bw printer and if
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-22 by guja
10 days max. Adam Seychell wrote:Unless you have nothing better to do in the next several months of your life, I wouldn t even think
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-22 by Adam Seychell
Get quote from prototype PCB shop for a 19x13 plated hole PCB. I think you want plated holes unless your looking for a challenge and want to connect every
Silk Screen Printing overlays
2005-09-22 by Andrew Mawson
Has anyone got a homebrew set up working for printing component location overlays? Any tips and gotcha s ? Been toying with the idea of making a small screen
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-22 by cristian
... I use Sprint Layout which has a special 1bit bitmap transparent import, from www.abacom-online.de/ It is not a sophisticated one, but very good for such a
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-22 by Blue
Hi, This is something I have done a few times using LineArt in Photoshop to get a clear black/white image. At the time I didn t have toner paper and used
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-22 by Stefan Trethan
On Thu, 22 Sep 2005 20:11:36 +0200, cristian ... I use target from www.ibfriedrich.com It has a import feature that converts a
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-22 by cristian
... I m interested, which software you use for that, please? Cristian [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-22 by Stefan Trethan
... You are wrong. The picture: Has a clamping bar, the homepage where it comes from even says so. Just behind
Re: [Homebrew_PCBs] Reproducing Unavailable Circuit Boards
2005-09-22 by Stefan Trethan
... First, forget about auto-routing. It doesn t work. Without putting WAY more effort into setting it up than it would take to hand route a few boards that
Re: cutting PCBs
2005-09-22 by Phil
We were talking about the same picture - there is no clamping bar. sorry to beleager the point but it aint there. period. I was trying to be polite and not
Reproducing Unavailable Circuit Boards
2005-09-22 by Tony
Hi all, Didn t see any discussion on this topic in past posts, so I thought I d throw this out to the group... I am trying to reproduce a circuit board for a
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-22 by Stefan Trethan
On Thu, 22 Sep 2005 10:34:23 +0200, turbojet ... Maybe we can clarify the definitions. Let s use some photos:
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-22 by turbojet
That?s right! ... From: Stefan Trethan To: Sent: Thursday, September 22, 2005 9:48 AM Subject: Re:
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-22 by turbojet
For cutting PCB then You don´t need the clampingbar, It´s mostly useful when cutting sheetmetal... ... From: Stefan Trethan To: Homebrew_PCBs@yahoogroups.com
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-22 by turbojet
You are reffering to a completely different type of equipment! There are a clampingbar at the shear that ST showed.... ... From: Phil To:
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-22 by Stefan Trethan
... i reckon he was referring to my original link: ST
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-22 by Stefan Trethan
On Wed, 21 Sep 2005 22:02:49 +0200, turbojet ... i have my doubts about the usefulness. Anyway, my shear has none, and i checked
Re: cutting PCBs
2005-09-22 by Phil
... behind the lever... we must be looking at different pictures or have different ideas what that is. the only thing behind the lever is the arm that holds
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-21 by turbojet
If You look really good, You´ll se the clampingbar ´it´s located behind the lever... ... From: Phil To: Homebrew_PCBs@yahoogroups.com Sent: Tuesday,
Re: Immerse tinning solution
2005-09-21 by Dave
... Some tin plating solutions have a rather short shelf-life. Use a little caution if it doesn t work well. ... The problem with answering this question is
Re: cutting PCBs
2005-09-21 by electrophilip
I have a small carbide tipped blade running on an arbor (belt driven) fix guide to table and pass board past blade, can use small household water spray to keep
Re: [Homebrew_PCBs] Immerse tinning solution
2005-09-20 by lists
In article , ... I ve used tap water with this, or a similar, product and it works ok but I notice there can be a slight milkiness or
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-20 by Adam Seychell
In the past I ve tried tin snips, but the jigsaw with tungsten tipped blade is by far most useful for minimum amount of resources/space. Works much like your
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-20 by Stefan Trethan
... I found, surprisingly, on the lever shear it doesn t move easily even without a bar. It seems fully sufficient to hold it with the left hand when cutting.
Re: cutting PCBs
2005-09-20 by Phil
The picture didn t show a clamping bar. I find that invaluable in getting a clean, straight and precise cut. I m not sure how I would manage well with out
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-20 by Stefan Trethan
I don t really like the dust and noise of saws, and i still need a new shaft for my small circular saw (10mm bore). The only disadvantage of all shears is the
Re: [Homebrew_PCBs] Re: cutting PCBs
2005-09-20 by Stefan Trethan
On Tue, 20 Sep 2005 15:24:48 +0200, bob_ledoux ... That s probably what they are called over there. There are a zillion types of shear,
Re: cutting PCBs
2005-09-20 by lcdpublishing
I have been using my table saw to make all the bigger cuts and the bandsaw to make the smaller nibble cuts. Table saw worked good, band saw blade doesn t
Re: cutting PCBs
2005-09-20 by bob_ledoux
For the hobby user I find aviation-style offset angle compound tin snips work very well. ... awkward ... leaves me ... after ... the ... they ... parts ...
[Homebrew_PCBs] cutting PCBs
2005-09-19 by Stefan Trethan
Hi, Just discovered slitting/lever shears work real well for cutting. Something like that: I always used a