Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-16 by Philip Pemberton
... The tank is 1.5 litres, filled with 500ml of etchant, leaving 6-8 inches of space from the liquid level to the top of the tank. The foam was overflowing
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Re: [Homebrew_PCBs] Reducing CuCl etchant foaming
2014-02-16 by Sam Rod
Perhaps you only need more room for the foam? Or reduce the liquid content translating into more room for foam. Put another way if your etchant is working....
Reducing CuCl etchant foaming
2014-02-16 by Philip Pemberton
Hi there, I ve been having problems with my CuCl etching bath (and to a lesser degree my FeCl etching bath). When I turn the air pump on, the etchant starts to
diy through hole activator
2014-02-16 by James Sleeman
Stumbled across these couple of videos about making through hole activator for electroplating. Looks like nice results.
Re: No plating through-hole plating
2014-02-11 by psykhon@...
soldermask as glue will work because its made to endure wave and reflow solder, its stands +-280 celcius without any damage
Re: [Homebrew_PCBs] Re: No plating through-hole plating
2014-02-11 by <indigo_red@...>
I like that idea: a higher temp powder mixed in might keep surface tension from wicking the solder out of the via to the surface conductors during heating.
Re: No plating through-hole plating
2014-02-11 by psykhon@...
Sorry, I meant to reply to Paul mainly and also to the general discussion
Re: [Homebrew_PCBs] Re: No plating through-hole plating
2014-02-11 by cheater00 .
... Pardon me?
Re: No plating through-hole plating
2014-02-11 by psykhon@...
Silver and Cooper powder or flask with solder mask a the adhesive/aglutinant Both sides should be laminated with something peelable prior to drilling Lots of
Re: [Homebrew_PCBs] Re: No plating through-hole plating
2014-02-11 by cheater00 .
... Interesting. What s your reasoning why that would help? Cheers, D.
Re: No plating through-hole plating
2014-02-11 by Paul Alciatore
I wonder if adding some powdered metal that does not melt at soldering temperatures to the solder paste would help it to coat the walls of the via. It may be a
Re: [Homebrew_PCBs] RE: No plating through-hole plating
2014-02-08 by Cecil Bayona
Solder has a huge surface tension, which tends to pull it onto a blob, have you seen how if you put too much paste it all pulls back into the pad or if you put
Re: [Homebrew_PCBs] RE: No plating through-hole plating
2014-02-08 by Harvey White
... Hasn t seemed to work when I ve tried it. I normally use either soldered eyelets or thin wire and solder. Solder wets metals to adhere, there s nothing
Re: [Homebrew_PCBs] RE: No plating through-hole plating
2014-02-08 by cheater00 .
... I do not know that this is true. Have you tried? Maybe it being a hole makes the difference? ... I guess following your logic it might also be a different
Re: [Homebrew_PCBs] RE: No plating through-hole plating
2014-02-08 by Cecil Bayona
I would think that solder paste once heated would bead away from the insulated whole just like it does on the top of the board. You would need something that
Re: [Homebrew_PCBs] RE: No plating through-hole plating
2014-02-08 by cheater00 .
Isn t the paste just solder paste? Couldn t you do the same thing with the right solder paste and a simple vacuum cleaner? I think the idea is great but we
RE: No plating through-hole plating
2014-02-05 by <dgminala@...>
The website for their US operations is www.lpkfusa.com http://www.lpkfusa.com. Click the Store link and look for the ProConduct and the EasyContac products.
No plating through-hole plating
2014-02-04 by Steve Greenfield
I wonder if LPKF will sell this to people who don t own one of their machines.
A nice video on professional PCB production
2014-02-03 by <fred27murphy@...>
I know this group is all about home PCB production, but I found this 30 minute video on how it s done professionally really interesting. Just thought I d
RE: What to do with excess cupric chloride etchant? Perhaps this...
2014-02-03 by <wa4qal@...>
The only problem is that Copper is almost universally toxic to plant life. Dave
Re: [Homebrew_PCBs] Blue Ray PCB direct printer for Dry-film
2014-02-03 by Cristian
... Should be ok but what if you made a laser head for the existing CNC drill and isolation milling machines? That will allow to drill the holes on the exact
Blue Ray PCB direct printer for Dry-film
2014-02-02 by <caf28035@...>
About a year ago, my brother and I engaged on a quixotic project to build from scratch a low-cost PCB direct printer for photoresist. Finally we did it using a
RE: Manufacturer's instructions for Tinnit
2014-02-02 by <arvidj@...>
Liquid Tin instructions: http://www.mgchemicals.com/products/prototyping-and-circuit-repair/prototyping/liquid-tin-421/ then click on the Usage Instructions
Re: [Homebrew_PCBs] Manufacturer's instructions for Tinnit
2014-02-02 by cheater00 .
... I ve found the following yesterday when looking at TinnIt... http://www.amazon.com/review/R1DATILKNAA2PQ/
Re: [Homebrew_PCBs] Manufacturer's instructions for Tinnit
2014-02-02 by <n0tt1@...>
OK, you might find this helpful: http://www.amazon.com/Parts-Express-Tinnit-Tin-Plate/product-reviews/B000 2BBV0A and this:
Re: [Homebrew_PCBs] Manufacturer's instructions for Tinnit
2014-02-02 by Steve
Thanks for the info Charlie. I have looked at the MG421. Wanted to look at the Tinnit instructions as well as a matter of comparison. Steve
Re: [Homebrew_PCBs] Manufacturer's instructions for Tinnit
2014-02-02 by <n0tt1@...>
Use this product instead...better than Tinit (per info on web). Mouser has it and others as well.
Re: New Member
2014-02-01 by Paul Alciatore
I do not have any sources of tin, but I suspect a web search would turn up some. I do want to make you aware that there are sources for a tin plating solution
File - monthly.txt
2014-02-01 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
Manufacturer's instructions for Tinnit
2014-02-01 by Steve
I looked around on the internet for the manufacturer s instructions for the use of Tinnit. No luck. Are those instructions on the web? Anyone point me to them?
New Member
2014-02-01 by <repairtech49@...>
Good Evening All, New member. I have recently been making my own boards using toner transfer and have been having good success doing single sided boards. Have
RE: What to do with excess cupric chloride etchant? Perhaps this...
2014-02-01 by <repairtech49@...>
Well if you are a Ham Operator I would not dump it around my ground rod it is perfect for increasing ground conductivity Jim
RE: Not happy with my etching.
2014-01-18 by <newaag@...>
Thanks for the update. In many cases, the manual dark/light controls on big copiers may have more dark range and is easier to use than the ones on laser
Re: [Homebrew_PCBs] RE: How we make PCB's
2014-01-18 by ctech
Hello David, It is true that Ferric Chloride will do the same job almost as fast under perfect conditions. With reverse plating it works consistently under any
RE: How we make PCB's
2014-01-18 by <dgh2259@...>
Hello Andreas, I apologize if I have missed something here, but why are you using reverse electroplating and ferric chloride, when the Ferric chloride will
RE: Not happy with my etching.
2014-01-18 by <tom42107@...>
Well, I think I fixed my etching problems. I tried two different things. One, I used a laser printer instead of a copier machine to print the layout and two, I
Re: [Homebrew_PCBs] How we make PCB's - spray-on negative resist
2014-01-17 by ctech
Here we go with part two, reverse plating/etching in 3 minutes http://nicadrone.com/index.php?id_cms=19&controller=cms Let me know what you guys think! Andreas
Re: [Homebrew_PCBs] How we make PCB's - spray-on negative resist
2014-01-16 by ctech
thanks for your feedback! corrected the positive resist , added a bit more info on the suppliers, and the last picture should render now gonna write up the
Re: [Homebrew_PCBs] How we make PCB's - spray-on negative resist
2014-01-16 by Robin Whittle
Hi Andreas, Thanks for this: http://nicadrone.com/index.php?id_cms=14&controller=cms I suggest you add links to supplier sites to save folks searching:
How we make PCB's
2014-01-15 by ctech
Hello all, I started writing up how we make PCB s here at Nicadrone.com check it out http://nicadrone.com/index.php?id_cms=14&controller=cms Let me know what
Re: [Homebrew_PCBs] RE: Not happy with my etching.
2014-01-15 by Harvey White
... If your fine traces are way too thin, then you re overetching. If the traces are pitted, especially in ground pour areas, and the traces are ragged as
RE: Not happy with my etching.
2014-01-14 by <tom42107@...>
Thanks for the answers. I guess I didn t explain very well. I m not really looking for nice shiny traces. I feel like I might be over etching. My traces are
Re: [Homebrew_PCBs] Re: Not happy with my etching.
2014-01-14 by K M Zahidur Rahman Samrat
you have problem with your tonner and printer regulation is not that much high enough that was in need
Re: Not happy with my etching.
2014-01-14 by <newaag@...>
Shiny is not the desired end product. It s simply the result of using very fine particles in a paste to abrade the surface and clean it. You can also use fine
Re: Not happy with my etching.
2014-01-14 by Dave Sage
Skip the metal polish stage. Shiny is NOT what you re looking for. If anything you should be sanding it with perhaps 600 grit wet/dry paper. In addition, who
RE: Not happy with my etching.
2014-01-14 by <newaag@...>
After cleaning the board with lacquer thinner post etch, use a fine paste metal polish to shine it. I use mothers mag wheel polish. It makes it very shiny.
Re: [Homebrew_PCBs] RE: Vitrea 160 soldermask - anybody used Dry Film as a resist?
2014-01-13 by James
... Because I have dry film resist, not dry film soldermask. The dry film resist does not really work as a soldermask very well. Dry film soldermask
RE: Vitrea 160 soldermask - anybody used Dry Film as a resist?
2014-01-13 by <ve7su@...>
Am I missing something here? Seems to me, if you go through the trouble of using dry-film to mask off the pads, why not just use the dry-film soldermask and
Vitrea 160 soldermask - anybody used Dry Film as a resist?
2014-01-11 by James
For those who don t know, Vitrea 160 is a heat cured glass paint (as in for painting glass) which can be used as a DIY soldermask and is available easily at
Re: [Homebrew_PCBs] Stubborn ferric chloride etching.
2014-01-11 by Russell Shaw
... It is straight after removing from the exposure light box. If you ve tried developing in the normal developer, then etched the board in ferric chloride,