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2003-11-22 by Stefan Trethan
This evening i put the first toner transfer board i made in the etchant, it worked like expected. The tracks are a bit rougher than with optical process, and i
2003-11-22 by mpdickens
I just completed a 45 minute run of the Shurflow fitted with the heat exchanger/heat sink. The pump worked like a champ and never cut out. Therefore, it s safe
2003-11-22 by mpdickens
... Well, I just purchased a Shurflo 2088-422-444 (US equivilent?) as well as the aluminum heat exchanger that fits the body of the motor (A perfect fit, I
2003-11-22 by mpdickens
... Well, I just purchased a ShShurflo088-422-444 (US eqequivalent as well as the aluminum heat exchanger that fits the body of the motor (A perfect fit, I
2003-11-22 by Dave Mucha
... If you put an X or + in each of the corners, say, where you will have mounting holes or something, you can line one up for your 0/0 mark and then verify
2003-11-21 by Leon Heller
... From: Stefan Trethan To: Sent: Friday, November 21, 2003 3:28 PM Subject: [Homebrew_PCBs] PCB
2003-11-21 by roel_cnc
... Well, ... I dont think so drilling for etching is only done with more than one layer is in use. ... my ... printer, go to options / set / misc / select no
2003-11-21 by sciciora
Hello! I just made my 1st Photo PCB lasts night. Turned out great! Well, actually I did make some PhotoPCBs about 15 years ago, but they were very crude.
2003-11-21 by Stefan Trethan
another interesting link: http://www.electronics.dit.ie/techprocs/p_c_b.htm Two sections are very interesting: An electric motor spins a shaft enclosed in a
2003-11-21 by mpdickens
... Mine are made of lexan (Lexan which is considerably cheaper than carbon fiber). Further, they are five years and have not deteriorated at all during this
2003-11-21 by Stefan Trethan
http://www.hta-bi.bfh.ch/E/telematik/PCBShop/etch-pcb/e6.html here is a picture of the splash unit from bungard and a good view at the holder. The unit is
2003-11-21 by Stefan Trethan
thanks for the suggestions. The fork thingy i can imagine quite well, i thought about that too (but i don t think fork is the right word for it..... But i m
2003-11-21 by Marty Grove
Why not use PVC? It comes in all shapes and sizes (pvc pipe, sheet, solid rods, etc...), and it can be connected in various ways (glued, welded, and screwed
2003-11-21 by Markus Zingg
... Hi Stefan I created a little fork for my through plating station for the same purpose and I think this could be easily used for etching too. Ok, a very
2003-11-21 by Stefan Trethan
Well, if stainless is no good in HCl, which Materials would be good for constructing a PCB holder for a vertical etch tank? I think carbon reinforced tubes are
2003-11-21 by Leon Heller
... From: Stefan Trethan To: Sent: Thursday, November 20, 2003 9:18 PM Subject: Re: [Homebrew_PCBs]
2003-11-21 by Adam Seychell
... What you describe is similar to my findings. Centrifuge pumps are great for high flow rates, but the pressures are relatively low compared to other pump
2003-11-21 by mpdickens
... Hi Adam, The compatibility chart that I have does not say that SS-316 and ammonium persulfate are incompatible, but SS-316 and ammonium persulfate are
2003-11-21 by wanliker@aol.com
http://cgi.ebay.ca/ws/eBayISAPI.dll? ViewItem&item=2574917146&category=25276&rd=1 Another possible Fraud, new seller, Canadian seller registration, UK
2003-11-21 by Adam Seychell
I m pretty sure ammonium persulfate is ok, but don t take my word for it, test a piece to make sure. SS 316 is ok for at least a week in ammonium persulfate.
2003-11-21 by wanliker@aol.com
Click here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2573870182 This is a FRAUD AUCTION, BEWARE.................. ENTIRE WRITE-UP WAS STOLEN FROM
2003-11-20 by Stefan Trethan
which etchants don t eat up stainless steel? I know sulphuric acid shouldn t, how about HCl? thanks st
2003-11-20 by mpdickens
... Obviously, I am also building a spray etcher. I searched through the message archives and I found references to a couple of pumps (One was even
2003-11-20 by mycroft2152
... paper ;-) ... Welcome to the club. I ve been using the clay coated paper with good results for over a year now, and should have known better. The clay
2003-11-20 by Adam Seychell
It just so happens my current project is building a spray etcher. I asked this same question on this group a month or two ago and since then I done some
2003-11-19 by pminmo
... paper ;-) I did the the same thing.
2003-11-19 by mpdickens
Does anyone on the list have a specific pump (Manufacturer and part number) that they can recommend for spray etching? It would be most helpful if the
2003-11-19 by Stefan Trethan
Well, it is maybe hard to admit but i am a stupid git. Toner transfer works MUCH better if you use the right side of the paper ;-) . Somehow on my first test i
2003-11-19 by Stefan Trethan
... I found out that variac transformers are really cheap at ebay. while 100VA joke size costs 150eur at mailorder shops the 1200VA variac i got for some 15
2003-11-19 by Les Newell
Thanks Adam, Sounds like my solution is quite low in copper. If I had realised this I would have used less acid and made up less etchant. I bought 250g of
2003-11-19 by Steve
Around here, a search of thrift stores turns up quite a few model train transformers and slot car tranformers, at very cheap prices. Not all light dimmers will
2003-11-19 by Adam Seychell
You can put more copper oxide to increase etch rate. From memory I think its around 140 g/L of copper(II) ions is good concentration. What copper oxide did you
2003-11-19 by Adam Seychell
... In that case you plated amorphous copper, which is like copper metal mud or sponge. ... Also don t forget to keep an eye on the current density !!. As Tom
2003-11-18 by roel_cnc
... YES got real tiny bubbles also if i change amps as u describe it ... the copper must be to low then. can i do the same thing again with the terra cotta pot
2003-11-18 by Les Newell
My chemicals finally arrived today so I made up a batch of cupric chloride etchant. The ingredients I used were: 250g copper oxide 790 ml 35% hydrochloric
2003-11-18 by twb8899
You probably need to add some brightner to this bath. The brown film being deposited is called burning and is the result of low brightner, high current
2003-11-18 by twb8899
You probably need to add some brightner to this bath. The brown film being deposited is called burning and is the result of low brightner, high current
2003-11-18 by mpdickens
I m no expert at electroplating, but it sounds to me like you have the pcb is connected to the annode (And it should be connected to the cathode). In other
2003-11-18 by Adam Seychell
Cathode current density (C.D.) normally between 10 ~ 20 mA/sq.cm. Are you getting hydrogen from the PCB ? If so then C.D. is too high or copper too low. To
2003-11-17 by roel_cnc
Hi, I m trying to get me bath plating but it isnt working as it should be! only thing i got is a dark brown easely wipe of film pcb is 10 sq cm power supply
2003-11-16 by Adam Seychell
Bend the ash tray and if you hear a breaking noise like sound of wood splitting before it breaks, then you have pure tin. If no sound then its a tin alloy. Tin
2003-11-16 by Steve
Very nice! Thanks! Steve ... Hackers ... set as
2003-11-16 by roel_cnc
... tin is as i know hard they make tea-pots and ash tray s from it we got some things around in da house and already ask me wife for a piece to (dis)solve in
2003-11-15 by Victor Faria
If this helps I just ordered a pure tin bar from mcmaster carr industrial supply. Also I saw no comments on my previous post on this issue with the digikey
2003-11-15 by Adam Seychell
... I ve never seen pure solid tin as plates. Tin is soft so its not very good for making things. Try your local chemical company for tin metal, if not then
2003-11-15 by Stefan Trethan
... I have no pricing, but i will write a mail and ask the guys.. maybe a good opportunity to ask them if they know where to get the additives... other german
2003-11-15 by Adam Seychell
... That s basically the mechanism behind plating additives. But there is a lot of things going on and all plating additives consists of a number of compounds,
2003-11-15 by Mike Cowlishaw
I got invited to talk about homebrew PCB-making at last weekend s Hackers conference. Took some new photos for the charts, so have posted the set as a PDF in
2003-11-15 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 :
2003-11-15 by mpdickens
Last night, I decided to see how well a copper cathode would work. It works better than an iron cathode (At least for me...) So, now my annode is iron and my