File - monthly.txt
2014-03-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
Messages
Browse messages
Page 56 of 707 · 35337 messages matched
Re: [Homebrew_PCBs] RE: Home made double side PCB with solder mask and silk screen!
2014-03-01 by ctech
sorry for the late response arggg yahoo groups mail delivery!! ... no, I mix 200g up in the spray gun and it last me over 6 months. Its properties seem to
RE: A nice video on professional PCB production
2014-03-01 by <goh@...>
Thanks for the link to the fascinating video! The scale and precision are vastly different from my hobbyist level. I worked for a year near Mechelen and Euro
Re: [Homebrew_PCBs] RE: Home made double side PCB with solder mask and silk screen!
2014-03-01 by Russell Shaw
... Expose it in direct sunlight (it has a *lot* of UV). If it works, maybe your UV source is no good.
Re: [Homebrew_PCBs] RE: Home made double side PCB with solder mask and silk screen!
2014-03-01 by James
Well, I tried diluting and airbrushing some of the ink (white) but didn t have any success. Well, it dilutes ok. It airbrushes fine to a thin coating. And I
Re: [Homebrew_PCBs] RE: Home made double side PCB with solder mask and silk screen!
2014-02-27 by <n0tt1@...>
Thanks for that info, James. I m thinking the stuff really *should* dry. Like you said, it *would* be a lot easier to work with. Maybe baking in an oven?
Re: [Homebrew_PCBs] RE: Home made double side PCB with solder mask and silk screen!
2014-02-27 by James
... Not that I m aware of. I have a couple 100g tubs of it kicking around, one has been here for well over a year and looks, smells, spreads, and cures the
Re: [Homebrew_PCBs] RE: Home made double side PCB with solder mask and silk screen!
2014-02-27 by <n0tt1@...>
Just asking...that UV paint has a short shelf life, doesn t it? Charlie On Wed, 26 Feb 2014 11:40:46 -0600 ctech writes: Thanks
Re: [Homebrew_PCBs] RE: Home made double side PCB with solder mask and silk screen!
2014-02-26 by ctech
Thanks javierete, The UV paint is the same used for the solder mask and etching and you can get it for this here:
Re: [Homebrew_PCBs] CD/DVD inkjet for art work
2014-02-26 by Harvey White
... Works with the pulsar paper. I use laser printer labels (small one) to attach the paper in one place, beginning of path. When doing double sided boards,
Re: [Homebrew_PCBs] CD/DVD inkjet for art work
2014-02-26 by Leon Heller
... I don t know if this technique works with a laser printer and LaserStar film, but with the JetStar Premium film that I use in my HP inkjet printer I cut it
RE: CD/DVD inkjet for art work
2014-02-26 by <kbyrne10@...>
Pulsar Pro has a excelent program for art work. Top of board, bottom of board and outside of box. It uses a laminator to do the job. Digi Key sells it. Kevin
Re: [Homebrew_PCBs] CD/DVD inkjet for art work
2014-02-26 by James
... Tracing paper is cheap and fairly transparent to UV, I use 110 gsm. Nip down your local artist shop and grab some for a couple bucks and try it out, might
CD/DVD inkjet for art work
2014-02-26 by <g8kps@...>
I have tried the toner method with very pore results. I have returned to use photo resist board and positive art work. The problem I now face is the cost of
RE: Home made double side PCB with solder mask and silk screen!
2014-02-25 by <javierete@...>
Hi ctech Your boards have very good finish, keep us posted! How do you dilute the mask paint? And what about the silkscreen? BTW I think you didn t finish the
Re: [Homebrew_PCBs] Home made double side PCB with solder mask and silk screen!
2014-02-24 by ctech
here we go http://nicadrone.com/index.php?id_cms=24&controller=cms
RE: diy through hole activator
2014-02-24 by <cs6061@...>
In the late 50 s when I was a kid living in New Jersey (the chemistry state) I had a good size chem lab starting from a Gilbert chemistry set (don t see them
Re: [Homebrew_PCBs] Home made double side PCB with solder mask and silk screen!
2014-02-24 by ctech
arg, did yahoo groups strip the image out? I ll post it on my site later on.... On Mon, Feb 24, 2014 at 10:17 AM, Vicent Colomar Prats
Re: [Homebrew_PCBs] Home made double side PCB with solder mask and silk screen!
2014-02-24 by Vicent Colomar Prats
No, this is not nice because there is nothing I can see (not image nor link).
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-24 by cheater00 .
... Guy living next door to me bought his flat really cheap. There was a drug house there and when he moved in there was blood splattered all over the walls.
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-24 by cheater00 .
... People I know running legit home labs out of hobby interest in chemistry and physics have had this done to them. Since then they are absolutely anal about
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-24 by Cecil Bayona
About a block from where I used to live there was a house that was a meth lab, the property was condemned, but a few month later the signs disappeared and the
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-24 by Fernando Cassia
... At least they re addressing the clean-up now...
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-24 by Fernando Cassia
... Any verifiable, published stats about demolished legit labs, or is this some govt bashing exercise? FC
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-24 by cheater00 .
None of that matters in America, where you can get raided by the DEA and have your laboratory demolished in the process if one of your idiot neighbours notices
RE: diy through hole activator
2014-02-23 by <craigl2@...>
I am not a lawyer, If you wish to read the law for yourself do a Google search for title 21 1310 . My understanding is that is is not prohibited to sell to
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-22 by ctech
Thank you that was very informative, Could you clarify The law does not require a company to sell to an individual however they may do so if you show up in
RE: diy through hole activator
2014-02-22 by <craigl2@...>
In the United States a license or registration is only required to import, export, sell or otherwise redistribute list 1 chemicals. It is not illegal or
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-22 by ctech
It sounds to me that we should investigate how to obtain a license for use of that chemical. I already started the process at my location in NIcaragua and will
Home made double side PCB with solder mask and silk screen!
2014-02-21 by ctech
[image: Inline image 1] NIce eh? Andreas Nicadrone.com [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-21 by ctech
is this it? (Calcium_hypophosphite) http://www.alibaba.com/product-gs/553254508/Calcium_hypophosphite_7789_79_9.html
RE: diy through hole activator
2014-02-21 by <cs6061@...>
Did you see the price on that ebay listing!
RE: diy through hole activator
2014-02-21 by <craigl2@...>
Please ignore the double post. The second post was sent 7 hours after the first when it had not yet shown up. Craig
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-21 by <craigl2@...>
According to the law, what you had to do to purchase the lye is all that you would be required to do to purchase calcium hypophosphite if you showed up in
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-20 by cheater00 .
... Illegal uses: Lye has been used for removing the ink from of $10 bills (with the intent of reusing the paper for counterfeit $100 bills). Sounds like a
RE: diy through hole activator
2014-02-20 by <craigl2@...>
According to the law, what you had to do to purchase the lye is all that you would be required to do to purchase calcium hypophosphite if you showed up in
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-20 by chuck richards
This reminds me of something else related to how ridiculous things are getting: Last time I bought a 1 LB bottle of lye at the hardware store, I had to sign my
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-20 by Cecil Bayona
It would be curious to see if someone in the US buys it and it s not confiscated. Technically you would be attempting to purchase drug making chemicals a
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-20 by Mark Lerman
There is 1 listing on ebay from Japan.
RE: diy through hole activator
2014-02-18 by <cs6061@...>
There is a silver conductive ink option that may work but I have not tired it yet. https://www.youtube.com/watch?v=EBlqPS8boLI
Re: [Homebrew_PCBs] RE: diy through hole activator
2014-02-18 by James
... Bugger. Yes it seems that the calcium hypophosphite is used to make copper hypophosphite as the active ingredient, so no real way around it. It did get me
RE: diy through hole activator
2014-02-18 by <cs6061@...>
This process has been posted before and unfortunately the critical ingredient of calcium hypophosphite is on the DEA s List I of controlled substances used to
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-17 by Russell Shaw
... Maybe i assumed wrong then. However, i started with 1:1 feric chloride, water, and some HCl, and it eventually converted to Cupric Chloride etching. But
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-17 by James
... I think you are talking cross-purposes here. The poster is having problem with Cupric Chloride,not Ferric Chloride. .
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-17 by Russell Shaw
... If you started with concentrated ferric chloride, it should be diluted 1:1 with water. The water gives room for the reactants. I m assuming the ferric
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-17 by Philip Pemberton
... That s interesting - I ve never seen viscosity mentioned as a control parameter for cupric chloride etchant. ... Are you suggesting I dilute the etchant I
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-17 by Russell Shaw
... Foaming is usually a sign the liquid viscosity is too high. Long etching times are a symptom of that too. The active ingredient should be diluted 1:1 with
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-17 by lists
In article , ... Nip round to your local Macdonalds and see if you can persuade them to let you have some Dimethylpolysiloxane.
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-16 by Russell Shaw
... Foaming is usually a sign the liquid viscosity is too high. Long etching times are a symptom of that too. The active ingredient should be diluted 1:1 with
Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-16 by James Sleeman
I m lazy, rather than setup an air bubbler system, each time I etch I just chuck in a capful of 35% peroxide and give it a stir. Typical 5x5 cm double sided