Re: [Homebrew_PCBs] Re: CuCl etchant is progressing
2003-05-01 by Adam Seychell
... That s a good idea. I m sure a new coin would be much better than +-1% accurate. If you are buying lab stuff get a eye dropper bottle (the ones with the
Messages
Browse messages
Page 676 of 707 · 35337 messages matched
Re: CuCl etchant is progressing
2003-04-30 by grantfair2001
Thanks again, Adam- I found an inexpensive balance made in India for C$15 and it is remarkably sensitive, comparing the weights included against those of
Re: phosphoric acid for etching
2003-04-30 by dsv1486
I used about equal quantities of each when I experemented. I plan on doing some future etching and will let you know how it turns out. ... for about ... small
Re: [Homebrew_PCBs] Re: CuCl etchant is progressing
2003-04-30 by adam Seychell
The etchant HCl and copper can very widely and work ok. Make up the 1.0M standard NaOH solution by dissolving 40.0g of NaOH in liter of water, store in
Re: CuCl etchant is progressing
2003-04-30 by grantfair2001
Hi Adam - Though I mention 5 pounds of copper in the related post, in fact I used less. It was about 4 pounds, plus a bit more from an extra test wire I hung
Removing HCl fume corrosion
2003-04-30 by grantfair2001
I have easily removed most of the rust on steel tools from the HCl fumes with a metal polish, Autosol. It is quick, and needs only some elbow grease. I guess
Re: CuCl is progressing
2003-04-30 by grantfair2001
The copper wire in the etchant is almost all gone. I will have to put on my rubber gloves and go fishing tomorrow to see how much wire, if any, is actually
Re: [Homebrew_PCBs] CuCL too much effort ?
2003-04-29 by Mike Putnam
What effect does heat have on the HCl etchant? My Ferric Chloride tank uses aeration as well as heat for a fast etch. Can you get a faster reaction by heating
RE: [Homebrew_PCBs] phosphoric acid for etching
2003-04-29 by Derek B.
I haven t tried this yet but I can get Phosphoric acid from work for about $10.00 a gallon. This is 36% acid. You know this is in coke in very small quantities
Re: [Homebrew_PCBs] CuCL too much effort ?
2003-04-29 by Adam Seychell
I cannot pinpoint why its slow. As I posted ealier I got a piece of clean copper in fresh 20% HCl and completely dissolved it in little over 3 hours to end up
CuCL too much effort ?
2003-04-29 by grantfair2001
To put the HCl fume problem in perspective - I had been bubbling the etchamt solution with an open tank for over a week without any HCL damage, even on steel a
phosphoric acid for etching
2003-04-28 by dsv1486
Has anyone tried phosphoric acid for etching? I had some left over from a old hydroponics project and added about 30% acid with some 3% Medical hydrogen
good phenol red source for analysis
2003-04-28 by Stefan Trethan
hi i just had a idea while i was looking for H2O2 in pool supply. I didn t find anything today in a shop who carries pool chemicals. so i had another look with
Re: [Homebrew_PCBs] Question for Stefan
2003-04-28 by Stefan Trethan
you are asking the wrong guy i believe. i only read of the printing directly with inkjet here in this mailgroup i believe. i read that you need a inkjet with
Question for Stefan
2003-04-28 by Salam Gobran
Hi Can u give more information about : fourth method: printing with inkjet (Straight path) and acrylic floor polish and third: plot on directly on copper
Re: [Homebrew_PCBs] Re: Problems with HCl fumes
2003-04-28 by Russell Shaw
... If condensation got acidified by the fumes then it will dissolve lime in the concrete. The fumes might have a faint smell. If you have an outside open pvc
Re: Problems with HCl fumes
2003-04-28 by grantfair2001
I can run an ABS plastic pipe from the cooler lid to a right angle elbow, and then out through a hole in the basement window. How should the pipe terminate at
Re: [Homebrew_PCBs] Home made etchant
2003-04-28 by Francisco Peña
That makes it all more clear, thanks! I just used some of this regenerated etchant and it s working fine, only it takes a little longer for the board to etch,
Re: [Homebrew_PCBs] Problems with HCl fumes
2003-04-28 by Russell Shaw
... HCl fumes make everything oxidize. About the only thing to do is vent it out doors, or bubble the exhaust thru a secondary tank of water.
Re: Problems with HCl fumes
2003-04-28 by rolanyang
You don t need to bubble with the lid off because fresh air travelling through the tube is being introduced by the pump from the outside. Save your tools! I
Problems with HCl fumes
2003-04-28 by grantfair2001
I had been aerating my CuCl etchant with a small vacuum pump used as an air source. I was bubbling in my Coleman cooler half full of etchant with the lid off,
Re: [Homebrew_PCBs] Home made etchant
2003-04-28 by Adam Seychell
CuCl is copper(I) chloride, it is almost insoluble in water. When chloride ion concentrations is sufficient (e.g. from HCl or CuCl2 or NaCl ect.) the
Re: [Homebrew_PCBs] Home made etchant
2003-04-28 by Francisco Peña
You say that the solution is brown because CuCl is present diluted in the etchant, and this can only happen when the chloride ion concentration is high, right?
Re: [Homebrew_PCBs] Home made etchant
2003-04-28 by Adam Seychell
I ve seen what you have just described. What you are doing when adding water to a dark solution of CuCl2 and some CuCl is the CuCl precipitates out as what
Home made etchant
2003-04-27 by frajopea
Hello, I ve been reading for a few weeks now, this is my first post. There was a post about regenerating FeCl using HCl, I had a bunch of used up and very
Re: [Homebrew_PCBs] beginner need help
2003-04-27 by Stefan Trethan
i only know spray on resist (ready in pressurized can) from kontaktchemie but i think this won t be available where you are. i think the much better idea
Pool oxygen chemicals (& hpgl file with open drill holes in artwork)
2003-04-27 by Stefan Trethan
hi if anyone remembers i was looking for a cheap H2O2 source. It is available as Swimming pool chemical in a bottle, i think 30%. but this is very hard to get,
Re: [Homebrew_PCBs] beginner need help
2003-04-27 by Tayyab Jamil Qureshi
Hello, I want to try the photosensitive coating method, I have tried one material available in the local market but the results were not that good. Can some
Re: Bungard website
2003-04-27 by Max Davies
I inquired about these plotters in March - but found they are not as cheap as their appearance suggests! I haven t seen the Bungard price, but identical units
Re: Oh no, blank fibreglass again!
2003-04-27 by twb8899
Max, For solder plating just use solder bars as the anodes. I m not sure what plating chemistry in used in your process. We used LeaRonal products for years
Re: [Homebrew_PCBs] Homemade PCB holders for etcher
2003-04-27 by Donald Aitken
Hi Dwayne: Cupric chloride will attack stainless steel. Best regards Donald Aitken ... From: Dwayne Reid To: Homebrew_PCBs@yahoogroups.com Sent: Saturday,
Re: [Homebrew_PCBs] tin plate compatable etchants
2003-04-27 by adam Seychell
Hello Max I have been attempting a similar process for producing double sided plated through holes, and I can not agree with you more about it being a long and
CuCl is progressing
2003-04-27 by grantfair2001
The copper wire in my Coleman cooler half full of etchant is getting smaller and smaller in diameter, and lots of it has disapeared into solution, but it seems
Re: [Homebrew_PCBs] beginner need help
2003-04-26 by Stefan Trethan
there are three methods which are beginner level i think: first: photosensitive coating need layout on transparent film or translucent paper, or needs use of
Re: Oh no, blank fibreglass again!
2003-04-26 by Max Davies
Liam/Tom/Mike Thanks all for your suggestions. It sounds as if there are several routes I could go from here. Liam - your suggestion of a different type of
Re: [Homebrew_PCBs] Sani Flush - is it lye (sodium hydroxide)?
2003-04-26 by Hans Wedemeyer
Grant, If you are in the USA look for Lewis Red Devil Lye Drain Opener. I buy it at Krogers here in Houston. Hans W ... [Non-text portions of this message
beginner need help
2003-04-26 by Tayyab Jamil Qureshi
Hello, I am trying different methods of transfereing my artwork from printed positive to the plain copper board, Can any one suggest me the easy and cheap way
Re: [Homebrew_PCBs] Re: Oh no, blank fibreglass again!
2003-04-26 by Mike Putnam
I have to differ with you, Tom. I used Tin Plate (Electrolysis) in my shop for many years and not Gold. Gold plating was too expensive. I etched with Ferric
Re: [Homebrew_PCBs] Homemade PCB holders for etcher
2003-04-26 by Dwayne Reid
... We don t do production, only prototypes. But yes - we found that the shelf life was short (days, weeks) until we covered (sealed) the etch tank while we
Re: Oh no, blank fibreglass again!
2003-04-26 by twb8899
Max, We always used solder plating as a resist and it worked fine. After etching either reflow the solder or strip it off and apply one of the newer white
Re: [Homebrew_PCBs] Oh no, blank fibreglass again!
2003-04-26 by Leon Heller
... I ve just checked the above with a web search, and it s basically correct. The etchant is ammonia, ammonium chloride and cupric chloride. The excess copper
Re: [Homebrew_PCBs] Oh no, blank fibreglass again!
2003-04-26 by Stefan Trethan
have you tried with sulphuric acid and H2O2 added to it? this should not eat up your plating. it blackens it but shouldn t eat it up. regards st
Re: [Homebrew_PCBs] Oh no, blank fibreglass again!
2003-04-26 by Leon Heller
... Professional PCB suppliers use a different etching chemistry - I think it s based on ammonia, it s alkaline, anyway. Perhaps that doesn t affect the tin. A
Re: [Homebrew_PCBs] Homemade PCB holders for etcher
2003-04-26 by Mike Putnam
Dwayne, Did you find the Ammonium Persulfate to have a short life for production work? I did not use it because of the life of the mixture. Was just wondering
Re: [Homebrew_PCBs] Oh no, blank fibreglass again!
2003-04-26 by Mike Putnam
Max, After drilling the holes, you have to clean the copper thoroughly, then seed the holes. You cannot plate the holes without something to plate inside the
Re: [Homebrew_PCBs] Sani Flush - is it lye (sodium hydroxide)?
2003-04-26 by Mike Putnam
Well, I am no chemist, but I got that right off a website. Took it for face value. Sorry if it is not correct. -Mike ... From: Ned Konz
Re: [Homebrew_PCBs] Homemade PCB holders for etcher
2003-04-26 by Dwayne Reid
... The PCB holder arrangement I described has been working well for at least 15 years - that is about the age of the holders I described. However, I use
Oh no, blank fibreglass again!
2003-04-26 by Max Davies
Hi everyone. A newbie to this group, I am (perhaps over-ambitiously) attempting to set up a micro through-hole plating line at home. It s a lot more involved
Re: [Homebrew_PCBs] Sani Flush - is it lye (sodium hydroxide)?
2003-04-26 by Ned Konz
... No. Lye is sodium hydroxide; potash is potassium carbonate. Another old common name for sodium hydroxide is caustic soda . -- Ned Konz
Re: [Homebrew_PCBs] Stirring or pumping etchant
2003-04-26 by Mike Putnam
Gee, that site really does a lot of good. The guy hates Americans and it is not posted in English. Doubt if I would trust sending my money there. -Mike ...