Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by Lez
... wrong side of the pond m8y. Our wal-mart is www.asda.co.uk We dont sell chemicals over here. IPA is like at a chemists only, and they ask questions,
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Re: [Homebrew_PCBs] Re: Screen printing emulsion
2006-11-28 by Lez
... Anyone used this, I m puzzled as to how it works, I can see that its light sensitive, but how does that make it allow the etch resist to pass through??? I
Re: [Homebrew_PCBs] Re: Dish Washer PC Board Cleaning
2006-11-28 by AnaLog Services, Inc.
Prolly 1,1,1. I bet that fella was single handedly responsible for environmental catastrophe. ... From: Andrew To: Homebrew_PCBs@yahoogroups.com Sent: Monday,
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-28 by AnaLog Services, Inc.
The common stuff is only about 70%, but you can get the 91% at Wal-Mart and elsewhere for a few cents more. The balance of the mix is of course water. I have
Re: [Homebrew_PCBs] Re: mini-project done, and cleaning no-clean flux
2006-11-28 by Stefan Trethan
On Tue, 28 Nov 2006 00:35:27 +0100, Randy Ledyard ... Thank you, I understand that. What i was asking is if there are likely contaminants far off the density
Re: [Homebrew_PCBs] board house
2006-11-27 by DJ Delorie
... My last board (one panel, 100 circuits[*]) was from pcb-pool.com. 6 mil rules, no minimum qty (16 sq in minimum), 1-6 layers, and panelization is allowed.
Re: [Homebrew_PCBs] board house
2006-11-27 by Ross McKenzie
I use http://www.pcbonline.org/ Regards, Ross McKenzie ValuSoft Melbourne Australia
RE: [Homebrew_PCBs] Re: mini-project done, and cleaning no-clean flux
2006-11-27 by Randy Ledyard
Stefan Yes you can, as long as we re talking a simple binary mixture of IPA and H2O. After that is gets complicated real quick.... Density of IPA (also known
board house
2006-11-27 by adastra_2001
I will have a file done in Eagle for a board that I need for a prototype. I only need about two of them right now. I want it done by a pro so I can get a feel
Re: Dish Washer PC Board Cleaning
2006-11-27 by Andrew
... A bucket full of CFCs. Ah I can hear the ozone dying as we speak :D
Re: [Homebrew_PCBs] Re: mini-project done, and cleaning no-clean flux
2006-11-27 by DJ Delorie
... Unless, as one person noted, water just makes the flux sticky . If so, you d want to have the least amount of water in the alcohol so as to avoid that.
Re: [Homebrew_PCBs] Re: mini-project done, and cleaning no-clean flux
2006-11-27 by Stefan Trethan
On Mon, 27 Nov 2006 21:53:30 +0100, Roland Harriston ... Well, that doesn t change my curious nature ;-) The only reason i have not yet
Re: Screen printing emulsion
2006-11-27 by john80014
http://www.cbridge.com/howtos/printedcircuitboard.shtml StencilPro. I have thought of using this for pcb, silkscreen and solder mask.
Imagem PCB to GCode
2006-11-27 by jpmclaro
Hi folks, Searching in the InterNet, I found a simple tool, that allows to convert an image of a PCB into GCode. The site this in Portuguese, more the tool
Re: [Homebrew_PCBs] Re: mini-project done, and cleaning no-clean flux
2006-11-27 by Roland Harriston
Stefan Trethan: I just rechecked the new bottle of iso that I recently purchased from Safeway supermarket, and it is 99% iso alcohol, not 90% as I might have
Re: [Homebrew_PCBs] Re: sharpie pens
2006-11-27 by Lez
... And I could wager a bet as to what I m on.......... ... The black one cost more than the blue! (I did get a black originally, but in all this pen cutting
Re: Any info about this technique?
2006-11-27 by john80014
... assist ... Yep straight from synrad applications. there is a section there discusing the applications of cutting of different materials and how they
Re: [Homebrew_PCBs] Re: mini-project done, and cleaning no-clean flux
2006-11-27 by Stefan Trethan
... I was wondering, can one accurately measure the purity of IPA or ethanol by measuring the density? Like measuring volume and weight, or using a hydrometer?
Re: [Homebrew_PCBs] Re: sharpie pens
2006-11-27 by Roland Harriston
oneacmename: I have never had a problems with the Sanford Sharpie black permanent markers. I notice, however, that not all of the Sanford Sharpie markers carry
Re: sharpie pens
2006-11-27 by Bert
Sharpie has two types of pens now. The regular ones do not have as good of an ink in them as they used to. The old ink is still available and is sold in the
Re: mini-project done, and cleaning no-clean flux
2006-11-27 by Bert
I get 91% for cheap at either target or WalMart and it owrks for most general purpose applications. No good for things like video heads and other sensitive
Re: [Homebrew_PCBs] Dish Washer PC Board Cleaning
2006-11-27 by DJ Delorie
... My dad used to have a 5 gal bucket of something called electrical cleaner which was specifically designed to be safe for cleaning electrical stuff. I
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Lez
... They use a thick filler/primer, then silver paint, then lacquer, just like a car I suppose. Thats how I was going to re-junvinate them, anyhow....... ...
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-27 by Lez
... Thought that was a posh London store then I saw you put ... So yes I may be on a winner we have safeway in the UK ... Ahh, they must be a safeway company
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Stefan Trethan
... They didn t show how it was done exactly, but i expect something like that. You must laquer it clear though, to preserve it. Are wheels originally laquered
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by DJ Delorie
... Hmmm... I ll have to check all the containers I ve got, one of them might be useful. I ve got some denatured alcohol, but I m not sure what the additives
Re: mini-project done, and cleaning no-clean flux
2006-11-27 by jpanhalt
... I use a 2:1 mixture of absolute ethyl alcohol and acetone. The acetone is probably not necessary and does evaporate over time, but the removal speed is
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Lez
... I ve thought of putting a big buffing wheel in the drill, polished ally looks like chrome... ... Local chemist shop only stocks nail varnish remover, it
Re: [Homebrew_PCBs] Isopropyl Alcohol 90%
2006-11-27 by Roland Harriston
I can always find 90% isopropyl alcohol at my local Walgreens drug emporium or at the Safeway supermarket. I m quite sure that this material is widely
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by Leon Heller
... From: DJ Delorie To: Sent: Monday, November 27, 2006 4:37 PM Subject: Re: [Homebrew_PCBs] mini-project
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by DJ Delorie
... Kester s knowledgebase suggests alcohol also, but notes that it s slow .
Re: [Homebrew_PCBs] Dish Washer PC Board Cleaning
2006-11-27 by Roland Harriston
Syd H. Levine: Yes, come to think of it, I have heard that Tektronix did that sort of thing when they did refurbs on oscilloscopes. I think they did some of
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Stefan Trethan
... Who needs wheels when you can have PCBs? ;-) BTW will alloy wheels look good painted? A few days ago on TV, i believe the show is called wheeler dealers or
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by DJ Delorie
... Ok, the two alcohols I have are both 70% alcohol, with nothing else but water. They got off most but not all of the residue. The water pic didn t do much
Re: [Homebrew_PCBs] Dish Washer PC Board Cleaning
2006-11-27 by Leon Heller
... From: Syd H. Levine To: Sent: Monday, November 27, 2006 3:47 PM Subject: Re: [Homebrew_PCBs]
Re: sharpie pens
2006-11-27 by oneacmename
I have only used the black ones and it worked very well just the standard black sharpie maker. ... at
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Lez
... Thanks for that wonderful idea! I happen to have some silver paint that thins ok with celly thinners, and a 5ltr can of it in the shed, I Was planning to
Re: [Homebrew_PCBs] Dish Washer PC Board Cleaning
2006-11-27 by Syd H. Levine
Tektronix used to run test instrument guts thru a dishwasher when they did refurbs. ... From: Roland Harriston To: Homebrew_PCBs@yahoogroups.com Sent: Monday,
Re: [Homebrew_PCBs] Dish Washer PC Board Cleaning
2006-11-27 by Stefan Trethan
On Mon, 27 Nov 2006 14:38:36 +0100, Roland Harriston ... Detergent for manual dish washing (usually green) seems to work for people. The
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by Stefan Trethan
On Mon, 27 Nov 2006 14:22:05 +0100, Leon Heller ... I ve heard it a few times now, many companies must do the same. ST
Re: [Homebrew_PCBs] Dish Washer PC Board Cleaning
2006-11-27 by Roland Harriston
Leon Heller: Thanks for the response. SAE used to employ an ordinary dish washer to clean PC boards after they came off of the wave soldering machine. I don t
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by Leon Heller
... From: Roland Harriston To: Sent: Monday, November 27, 2006 11:51 AM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Leon Heller
... From: Lez To: Sent: Monday, November 27, 2006 11:16 AM Subject: [Homebrew_PCBs] sharpie pens
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Lez
... Lol you did. BUT I m getting such good resolution the quality is beyond beliefe, easily matches the 600dpi output from my laser, and its a one step process
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by Roland Harriston
Leon Heller: Was that company, by any chance, Scientific Audio Engineering in Los Angeles California. They manufactured the famous SAE audio equipment. Roland
TT Successful .. especially for German Users here..
2006-11-27 by Harry
HI all here. I am an Electronic Oldtimer haveing gone thru all sorts of PCB hobby fabrication. Currently most of my PCB´s are milled ( Home Made Router
Re: [Homebrew_PCBs] sharpie pens
2006-11-27 by Stefan Trethan
... I don t have sharpies here, but staedtler red permanent OHP pens are fairly good. Not perfect though, they ll still etch through sometimes. Maybe they ll
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by Stefan Trethan
On Mon, 27 Nov 2006 11:12:16 +0100, Leon Heller ... With some circuits you need de-ionized water. Many companies use ion exchangers for that, i believe the
sharpie pens
2006-11-27 by Lez
Having problem with sharpie pens, the ink is lifting off in places, and sometimes even flotas away in the shape it was! Its odd looking at a hols and a short
Re: [Homebrew_PCBs] mini-project done, and cleaning no-clean flux
2006-11-27 by Leon Heller
... From: Leon Heller To: Sent: Monday, November 27, 2006 7:56 AM Subject: Re: [Homebrew_PCBs]