Re: [Homebrew_PCBs] Milling Boards
2012-12-13 by Art Eckstein
Joe, Yep, you have run into a couple of problems with boards being level. It has been found the boards will bow up in the middle when clamped on the edges
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Re: [Homebrew_PCBs] Milling Boards
2012-12-13 by Jamie Cunningham
hey Joe - I milled a pcb using my homemade CNC machine - I actually used double sided tape to hold it down and probably went a little too deep with the bit
Milling Boards
2012-12-13 by joe M
Hello, I am trying to mill the pcb (FR4) with a taig. I did not have much luck with a uniform trace isolation even when I hold the board flat down by clamping
Bernoulli sprayer
2012-12-13 by rolynd33
What speaks against using a bernoulli type sprayer for spray erching ? I did a seach here but bernoulli did not yield any viable results. (In essence its just
Re: 10 etchants
2012-12-12 by jackinnj
Iron Ike removes a lot of Fe stains, although FeCl I haven t tried. Here s a link to the product: http://www.herchem.com/specs/ironike.pdf I used it on a
Re: [Homebrew_PCBs] Re: 10 etchants
2012-12-11 by lists
In article , ... Ferric Chloride stains can be removed with Oxalic acid or commercial stain remover.
Re: [Homebrew_PCBs] Re: 10 etchants
2012-12-11 by Russell Shaw
... I used to remove iron-based rust stains using a biodegradeable rust killer gel that is discontinued. Another biodegradeable non-acidic rust killer should
Re: 10 etchants
2012-12-10 by cunningfellow
Smiling Cat, This has long been the definitive source of info on CuCl around here. http://members.optusnet.com.au/eseychell/PCB/etching_CuCl/index.html You do
Re: plating holes with an exploding wire
2012-12-10 by smilingcat90254
Sometimes, it peels off. Some times, I can use a knife point to try to peel and it stays put. I think we are missing something on the surface treatment of the
Re: 10 etchants
2012-12-10 by smilingcat90254
I ve seen nurdRage. He does have good videos and this is no different. Interesting about HCl + H2O2 (yes it does decay ). And CuCl2 + HCl (stable). He says it
10 etchants
2012-12-10 by Russell Shaw
http://www.youtube.com/watch?v=Q4tWEse2rDI&feature=em-subs_digest
10 etchants
2012-12-10 by Russell Shaw
http://www.youtube.com/watch?v=Q4tWEse2rDI&feature=em-subs_digest
RE: [Homebrew_PCBs] Re: plating holes with an exploding wire
2012-12-09 by Jeff Heiss
I did experiments of plating copper clad using the same recipe but the copper coating was easily rubbed off. How is your coating durability? Jeff _____ From:
Re: plating holes with an exploding wire
2012-12-09 by smilingcat90254
Just a minor point, in a vacuum, there is very little to no gas. Fans do not help. If you are going to that trouble, just plate it. I ve uploaded the schematic
RE: [Homebrew_PCBs] Re: plating holes with an exploding wire
2012-12-08 by Jeff Heiss
Can a vacuum deposition work? Would the vapor get into small vias, say 0.008 ? Maybe a fan inside would help? https://www.youtube.com/watch?v=G2FhHuFrZrQ
Re: [Homebrew_PCBs] Re: plating holes with an exploding wire
2012-12-08 by Slavko Kocjancic
... And how to pass component into that hole? Solid wire can be used only for vias . Plating is to leave hole opened but to have electric contact with both
RE: [Homebrew_PCBs] Re: plating holes with an exploding wire
2012-12-08 by Jeff Heiss
That typically works fine. But with boards with more than two layers, vias under chips, or BGAs with vias between ball pads, it does not work. Jeff _____
Re: plating holes with an exploding wire
2012-12-08 by alan00463
How about just regular solid-conductor wire (Cu, Sn, etc.) ? If it s the right diameter, it will fit into the holes. Why wouldn t that work fine ?
Re:exploding wires
2012-12-07 by JAMES HARVEY
On a related topic using a similar method, http://www.capturedlightning.com/frames/shrinkergallery.html I didn t believe it could be done until a friend gave
Re: plating holes with an exploding wire
2012-12-06 by AlienRelics
Jeri Ellsworth has a video or two illustrating plating a transparent coating of conductive tin on a sheet of glass, without a vacuum. I like it, a
Re: Thickness of copper for h220 laminator
2012-12-06 by deborah
many thanks.
Re: [Homebrew_PCBs] plating holes with an exploding wire
2012-12-06 by Kaj Wiik
... Not specifically about plating but interesting document in general: http://www.belljar.net/Exploding_Wires.pdf Here is a nice video (bit too long wire for
Re: [Homebrew_PCBs] plating holes with an exploding wire
2012-12-06 by Slavko Kocjancic
... The link gave me engine CDI device. Well the DC/DC is usable for exploding wire I don t know if that s correct file at all? Is there some video or similar
Re: [Homebrew_PCBs] plating holes with an exploding wire
2012-12-06 by chuck richards
This idea reminds me a whole lot of the method Edison used in 1902 to produce molds to mass-produce cylinder records. First they would take the master
Re: [Homebrew_PCBs] plating holes with an exploding wire
2012-12-06 by Stefan Trethan
Nice idea. A similar method is used to gold plate samples for old electron microscopes. I ve noticed a conductive metal deposit in plastic cases near the point
Re: [Homebrew_PCBs] plating holes with an exploding wire
2012-12-06 by Andrew Leech
Love it, that sounds fantastic! I m guessing it d be pretty darn loud though, the neighbors may be less impressed. Andrew ... [Non-text portions of this
plating holes with an exploding wire
2012-12-06 by Jeff
A friend descried to me a method for plating through holes. The plating is accomplished by inserting a wire into the hole and applying a high voltage to the
Re: [Homebrew_PCBs] Thickness of copper for h220 laminator
2012-12-05 by Kevin Byrne
From what I know it is only the smallest dia. board stock. Pulsar Pro web site a place to check. I have GBC Creative brand and .035 inch which is also .90 mm
Thickness of copper for h220 laminator
2012-12-05 by deborah
Hi all, what is the max thickness that the GBC h220 can cope with please? Is it more than 0.5mm as want to etch thicker. Cheers Deb
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-04 by Pict
Maybe thinking that light would probably help decompose the peroxide content if any? From: John Anhalt Reply-To:
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-04 by Pict
Something like this should workŠ http://www.bhphotovideo.com/bnh/controller/home?O=NavBar&A=getItemDetail&Q=& sku=335945&is=REG&si=rev#costumerReview Any
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-04 by lists
In article , ... Cut up a black plastic bin bag and secure round your existing jar? -- Stuart Winsor Only plain text for emails
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-04 by John Anhalt
but I understand sunlight weakens it? Where do you hear such stuff? Sunlight, if anything, helps keep it oxidized. The copper isn t going anywhere. I
Re: Cupric Chloride Fumes
2012-12-04 by dubob4432
anybody have a link to something to store this in? currently in a clear glass jar but I understand sunlight weakens it? I can t find any smaller dark glass
Re: Cupric Chloride Fumes
2012-12-04 by smilingcat90254
Joking and kidding is fine for something but not something very toxic. Not sure if there is any antidote if you drink the stuff. Drink the stuff and you will
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-03 by Leon Heller
... It s often called Spirits of Salt in UK hardware shops, they won t recognise hydrochloric acid or muriatic acid. Leon -- Leon Heller G1HSM
Re: Cupric Chloride Fumes
2012-12-03 by bruce_fleming
Thank you for drawing my attention to the fact that HCl and muriatic acid are the same thing. If I had not been in a rush and thought about the words of
RE: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-03 by Tony Smith
... de- ... sting a bit ... nose;) So not-very-concentrated diluted-down-lots HCL is perfectly ok. Got it. I ll pour some on my cornflakes now. Tony
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-03 by Russell Shaw
... Ok if it s not real concentrated. ... The stuff in the hardware shop is reasonably concentrated, but i used to de-rust steel with it diluted 3:1. Gloves
RE: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-03 by Tony Smith
... the ... ...so it s perfectly ok to breathe, drink & bathe in then? Neat! Just the thing to clean out that stubborn bit of grease under your fingernails,
Re: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-12-03 by Russell Shaw
... Except Ruthenium. http://www.youtube.com/watch?v=H7Ng4sOVkns&noredirect=1 I may be way off, or i dont understand this process, ... ...
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-03 by Russell Shaw
... HCl is naturally occuring in the body .
Re: Want to plate drill holes for your double sided PCB's
2012-12-02 by David
Has anyone tried this? I cannot see how the silver will deposit onto an unprepared fibreglass PCB, If it does then it would cover all the board! or am I
Re: [Homebrew_PCBs] Re: Cupric Chloride Fumes
2012-12-02 by John Anhalt
I had a lot of problems with the ferric chloride while the least problems with undercutting with the new muriatic acid + HCl (becomes cupric chloride)
Re: Cupric Chloride Fumes
2012-12-02 by bruce_fleming
The etching solution is made from muriatic acid (1 part) added to HCl (2 parts). Here is the link on Instructables:
Re: Cupric Chloride Fumes
2012-12-02 by bruce_fleming
The HCl solution I used is only 3% and the fumes were not too bad. I do not want things in the basement to rust or get that brown film from the fumes. Just
Re: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-12-02 by John Anhalt
The mixture you describe is the Tollens reagent/reaction. As mentioned earlier in this thread, there are modified versions of that reagent that make more
Re: [Homebrew_PCBs] Cupric Chloride Fumes
2012-12-02 by John Anhalt
etch with muriatic acid so you do not have throw out your solution when saturated with copper. Are you talking about the peroxide + muriatic acid etchant or
RE: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided PCB's
2012-12-02 by Jeff Heiss
A youtube video shows plating surfaces using silver nitrate, ammonia, sugar, and sodium hydroxide. Will this work for via plating or would the silver rub off
Re: [Homebrew_PCBs] Cupric Chloride Fumes
2012-12-02 by Russell Shaw
... You only need less than 5% HCl acid in the etchant. There should be minimal fumes.