Re: [Homebrew_PCBs] toner / lacquer thinner
2011-12-10 by Roland Harriston
Richard: I think that there might be a number of compounds that are generally called lacquer thinner . Can you provide the brand name of the item you are
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Re: [Homebrew_PCBs] toner / lacquer thinner
2011-12-10 by Stefan Trethan
Check out the MSDS for the ingredients, and tell us what brand and type of thinner you used, they vary somewhat. ST
toner / lacquer thinner
2011-12-10 by Richard
I accidentally ran across something that appears to help toner transfer. Ran out of alcohol that I use to clean the board before laminating. Tried lacquer
Re: Perfect paper
2011-12-10 by x100
... Thanks for the information. I will give it a try. I ve been using magazine paper with near perfect results, but it leaves a white residue on the toner.
Perfect paper
2011-12-07 by bigbazinga
I went on a quest for a replacement for the obsolete HP part number Q2419A that received a rave review in the paper database and have found it. It is HP
Re: [Homebrew_PCBs] Baking LEDs
2011-12-07 by Erik Knise
James, Bertho is correct. Most IC s I worked with came in vacuum packed backs with desiccant and a moisture indicator. When re-flow soldering you really
RE: [Homebrew_PCBs] Baking LEDs
2011-12-07 by MIKE DURKIN
I use a cup warmer and a steel cup to hold my parts for 24hrs.... more or less .... I just plan it out to do my hand soldering the next day .... I plan in the
Re: Baking LEDs
2011-12-07 by jharig23@ymail.com
Okay, thanks Bertho. I ll give it a try, and see what happens. -James
RE: [Homebrew_PCBs] Baking LEDs
2011-12-07 by Boman33
Some electronic components can absorb humidity and when going through the thermal soldering cycle the humidity can expand and cause microscopic cracks that
Baking LEDs
2011-12-07 by jharig23@ymail.com
Hello, I am very new in the world of DIY PCBs. As a basic example, I m going to make a very simple LED circuit. I ve ordered up some SMD LEDs and matching
Re: FYI Bare paint....
2011-12-07 by jharig23@ymail.com
... That is AMAZING!
Metal Core PC boards
2011-12-04 by John Dammeyer
Has anyone done any metal cored PC boards at home? Or even know the process for fabricating them? John Dammeyer [Non-text portions of this message have been
Tips for making PCBs
2011-12-03 by Steve Greenfield
From Advanced Circuits: 7 Common Mistakes With Gerber Files http://www.my4pcb.com/easy_design_order_printed_circuit_boards_common_mistakes.htm 10 Most Common
Re: [Homebrew_PCBs] Small project from start to finish to learn
2011-12-01 by Peter Johansson
... The Mims book you have is a great place to start. The next thing you want to read is volumes I - IV at allaboutcircuits.com. To design your talking
Re: [Homebrew_PCBs] FYI Bare paint....
2011-12-01 by Per Mattsson
Hi! You can definitely print antennas and pcbs. You cannot (at least we haven t) been able to solder on printed traces. We do antenna design evalutation using
Pilot Pro CNC Router Information
2011-11-30 by pdj@bctonline.com
Need more info on the CNC machine? We have a $34.00 dvd quality for an affordable price. http://www.pdjinc.com.
Re: FYI Bare paint....
2011-11-30 by AlienRelics
What paint? Most paints -are- waterproof once dry. Steve Greenfield AE7HD
Re: [Homebrew_PCBs] FYI Bare paint....
2011-11-30 by Donald H Locker
Or copper plating it? Donald. -- *Plain Text* email -- it s an accessibility issue () no proprietary attachments; no html mail / ascii ribbon campaign -
Re: [Homebrew_PCBs] Disposing of etchant
2011-11-30 by Russell Shaw
... I ve been using the same FeCl in a tank for the last 2+ years and top it up with hardware-shop muratic acid (HCl). It s probably converted to CuCl etchant
Re: [Homebrew_PCBs] FYI Bare paint....
2011-11-30 by Erik Knise
Why not cover it with a protective layer?
RE: [Homebrew_PCBs] FYI Bare paint....
2011-11-30 by MIKE DURKIN
so much goes the idea of printing antennas ... To: Homebrew_PCBs@yahoogroups.com From: cachureos@yahoo.com Date: Tue, 29 Nov 2011 16:26:57 -0800 Subject: Re:
Re: [Homebrew_PCBs] FYI Bare paint....
2011-11-30 by Herbert E. Plett
even once dry, paint is not water proof so it will fade away with moisture.... ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Leon Heller
... Over here, it rejoices in the name Spirits of salt , or just hydrochloric acid. Muriatic acid is hardly ever used. Leon -- Leon Heller G1HSM
RE: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Tony Smith
... less ... called ... Same stuff. Just check the percentage. Tony
RE: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by David C. Partridge
In the UK it is commonly called any of: brick acid, hydrochloric acid, or surprisingly muriatic acid (I had thought that terminology was long dead). Easy to
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Piers Goodhew
Thanks mates, I m about to move to the UK (where persulphate seems a lot less common :-/ ), so I don t want to be lugging a litre of HCl, but is it just called
RE: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Tony Smith
... the ... has great ... I ve seen that stuff, not cheap but still much cheaper than the lead. I was thinking of doing some plating so the lead would have
FYI Bare paint....
2011-11-29 by Stephen
http://www.bareconductive.com/about takes you to an interesting site selling water based conductive paint. There are no technical specs available and it
Re: Sponge etching with HCl and H2O2?
2011-11-29 by tda7000
Well, I bought some foam brushes and tried out that idea. It certainly made a difference but didn t etch in one minute. I think maybe my HCl or H2O2 might be
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Bill Maxwell
and after getting your exercise lifting the lead flashing, have a look at the aluminium ( no, that s not misspelt ) flashing now available. I think it has
RE: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Tony Smith
... Yup, it s down the back with the building supplies. Amuse yourself by trying to lift the little rolls of lead flashing while you re there. From memory it
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Bill Maxwell
Yes, in Bunnings but look in the garden or pool section rather than the paint department. These days in Oz they charge a hefty deposit on the container.
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Piers Goodhew
As in Bunnings? I m in aus but I ve never looked.. PG Sent from my phone, anything lewd or incomprehensible is probably autocorrect and not my fault. ... From:
RE: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-29 by Tony Smith
... clean concrete ... Same in Australia. Tony
Re: [Homebrew_PCBs] Disposing of etchant
2011-11-28 by Piers Goodhew
I use ammonium persulphate and give the CuSO4 crystals to my local council hobby chemical cleanup which they do a few times a year. For low volume guys like
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-28 by DJ Delorie
... In our local hardware store, it s in the paint aisle, as it s used to clean concrete before painting.
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-28 by DJ Delorie
... Reactions run fastest when all the parts needed are present in sufficient quantities. Pure HCl will *not* etch copper! You also need an oxidant!
Re: [Homebrew_PCBs] Disposing of etchant
2011-11-28 by DJ Delorie
... I don t. Use CuCl and regenerate it. Any tiny bits of etchant I rinse off the board are so diluted by the torrent of water that it doesn t really matter
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-28 by DJ Delorie
Heh. In the USA, lab-grade HCl is expensive, but concrete cleaner (exactly the same chemical!) is dirt cheap. I can buy etchant for pennies a board, if I
Re: Sponge etching with HCl and H2O2?
2011-11-28 by leeleduc
I ve gotten some questions in the past on where to find chemicals for making etchant. Here s a list of where to find Hydrochloric Acid and Hydrogen Peroxide in
Re: [Homebrew_PCBs] Disposing of etchant (was: Sponge etching with HCl and H2O2?)
2011-11-27 by Benjamin Blumer
The two options seem to be: dilute it and mix it with a baking soda solution to neutralize it or to bring it to a chemical disposal center. Sent from my iPad
Disposing of etchant (was: Sponge etching with HCl and H2O2?)
2011-11-27 by DaveC
OK, everybody, chime in here and share how you dispose of your etchant. I ve got metal pipes so need to know what to do. But then again, with my weak
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-27 by Benjamin Blumer
I would take that to mean that with those concentrations, your solution is already too diluted. If you don t have access to 30% HCl, I d just use the ratios
[Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-27 by DaveC
I entered 3% h2o2 and 15% hcl into the calculator. The result is: Mix h2o2: 66.7%; hcl: 53.3%; water: -20% What does it mean if I get a water result of minus
Re: Sponge etching with HCl and H2O2?
2011-11-27 by leeleduc
Here s a web page about using the acid/peroxide etchant. About half way down the page is a calculator for the mix. Input your % acid and % peroxide and it
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-27 by Roland Harriston
I (Roland) usually water-dilute the etch mix at about 100-to-1 ratio, and pour it down the drain. This is not a problem in my area because all of the plumbing
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-27 by Benjamin Blumer
He s not less HCl, he s just using more pure hydrogen peroxide -- which also means less water. Heating the solution with an aquarium heater, and having a
RE: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-27 by MIKE DURKIN
I seem to remember needing to bubble air through it and/or prime it with copper wire ..... before using it to etch boards .... you didn t just mix and go for
Re: [Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-27 by DaveC
... What is your technique for getting rid of etchant? Thanks Dave
[Homebrew_PCBs] Re: Sponge etching with HCl and H2O2?
2011-11-27 by DaveC
... I m using the same effective ratio. My muriatic is 15% and h2o2 is 3% and my ratio is 1:1.This is the same as you re using: 31% hcl and 3% h2o2 at a ratio