Re: [Homebrew_PCBs] Etchant solutions - home-brew questions...
2005-07-20 by Adam Seychell
... Depends what your making. If you decide to make some ammonium persulfate then it doesn t require or use dangerous chemicals at all, just boring old
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Re: [Homebrew_PCBs] Re: Etchant solutions - home-brew questions...
2005-07-19 by Stefan Trethan
On Tue, 19 Jul 2005 00:36:33 +0200, lcdpublishing ... Purchase as powder, mix with water, later discard. ST
Re: [Homebrew_PCBs] Re: Etchant solutions - home-brew questions...
2005-07-19 by Stefan Trethan
... Ah yes, might well be too opaque with 3 inches. mine is onlyabout one inch. If i don t etch when the sun is shining through the window i use a flashlight
Re: [Homebrew_PCBs] CNC scoring a panelized SMT board
2005-07-19 by Peter Homann
Yes, I have done this. I received a board where the cutting operation was missed. They want the board layout separated by 10mils for cutting. I used a centre
Re: Etchant solutions - home-brew questions...
2005-07-19 by Phil
In the usa it s around $15-18 per Kg and that make 4 liters of etchant. enough for about 40-60 smallish boards. I ve bought my last one from Frys for around
Re: [Homebrew_PCBs] Re: Etchant solutions - home-brew questions...
2005-07-19 by Leon Heller
... From: lcdpublishing To: Sent: Monday, July 18, 2005 11:36 PM Subject: [Homebrew_PCBs] Re:
Re: Etchant solutions - home-brew questions...
2005-07-19 by Steve
... Heh, heh... you didn t look very hard. First folder: http://groups.yahoo.com/group/Homebrew_PCBs/files/Acid_Etching/ I saved instructions someone posted on
Re: Etchant solutions - home-brew questions...
2005-07-18 by lcdpublishing
... Is this (AP) something that you can make from common products or is it something you purchase for this purpose? Thanks Chris
Re: [Homebrew_PCBs] Etchant solutions - home-brew questions...
2005-07-18 by David Cureton
Hi Chris, The brown etchant that stains stuff like crazy is called Ferric Chloride. Which is a common hobby etchant. Another common etchant is Ammonium
Re: Etchant solutions - home-brew questions...
2005-07-18 by Phil
The clearest etchant I am aware of is ammonium persulphate (AP). As it gets consumed, it turns a rather pretty shade of blue but is still clear enough to see
Re: [Homebrew_PCBs] Double toner transfer - how would this work out?
2005-07-18 by Stefan Trethan
On Mon, 18 Jul 2005 21:12:15 +0200, lcdpublishing ... legend works nicely, soldermask never tried. if you want to make a legend over etched traces, it is
Re: [Homebrew_PCBs] Etchant solutions - home-brew questions...
2005-07-18 by Stefan Trethan
On Mon, 18 Jul 2005 21:13:11 +0200, lcdpublishing ... You can make CuCl from common chemicals. It is sort of clear (green, but you can see clearly with a
Etchant solutions - home-brew questions...
2005-07-18 by lcdpublishing
I looked through the files section and didn t see what I am looking for (it may be there, I just don t know one chemical from another). I am looking for an
Double toner transfer - how would this work out?
2005-07-18 by lcdpublishing
After some research on PCB milling, I am re-thinking the process of etching again - seems more logical to a certain degree. Has anyone tried this with
CNC scoring a panelized SMT board
2005-07-18 by Jeff Swayze
Hi Folks, I just came across this group and thought it would be the perfect place to pose this question. I need to make a *lot* of very small circuit boards,
Re: SLA7062M Group Purchase - thinking about making a stepper driver?
2005-07-17 by Steve
http://groups.yahoo.com/group/Electronics_101/ Steve Greenfield
SLA7062M Group Purchase - thinking about making a stepper driver?
2005-07-17 by lcdpublishing
Hi Group, This is a cross post from the Electronics 101 Yahoo group. I know many of you here also post there. There are several of us making our own stepper
A CNC Artwork transfer hack
2005-07-17 by David McNab
Some days ago, I mentioned a disappointing experiment of mounting a Staedtler Lumocolor 313 Red Superfine marker pen on my CNC drill and programming it to draw
[Homebrew_PCBs] PCB drilling station reading
2005-07-16 by Robert Hedan
Interesting ideas over here: http://www.crankorgan.com/index.html I m not interested in the plans. It s the descriptions and pictures that I find valuable;
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-16 by Bill Maxwell
It s probably not useable, at least by conventional drill bits. It would probably be limited to the smallest dental burrs or whatever they are called. My
Re: PCB copper clad board
2005-07-15 by Mike Phillips
When ever you figure out the cost/size let us know. Mike
Re: PCB copper clad board
2005-07-15 by Phil
... sorry, I forgot to answer this one. Based on the boards I have, it works out to a little over 9 sq in. per ounce or about 145 in sq per pound. Of
Re: PCB copper clad board
2005-07-15 by Phil
Thanks for the feedback. Lots of points and questions: - I ve looked into the various usps options and there are several that are quite reasonable.
Re: [Homebrew_PCBs] Re: PCB copper clad board
2005-07-15 by Stefan Trethan
... fact, not fiction ;-) I too have loads of 18u board that is intended to be plated. No problem with using it, just use wider traces accordingly. Etches
Re: [Homebrew_PCBs] Re: PCB copper clad board
2005-07-15 by JanRwl@AOL.COM
One point I have never seen touched-on in this group: Much copper-clad (all?) seems to be manufactured with 1/2 oz. copper, as MOST boards are plated
Re: [Homebrew_PCBs] Re: PCB copper clad board
2005-07-15 by Mycroft2152
For those of us freeEAGLE cad users, a 3 x 4 board is the max size. so Even a 4 x 6 board would be great. I d buy them by the dozens. Myc
Re: PCB copper clad board
2005-07-15 by lcdpublishing
Hi Phil, I personally like larger boards for blanks. I then cut them to the size I need - keep in mind I have only made a few things so far. My reasoning is
Re: PCB copper clad board
2005-07-15 by Mike Phillips
I like th eidea of 1lb packages. How many square inches does that equate to in .064 ? Also, do you happen to have any bare FR4? Mike ... make it
Re: PCB copper clad board
2005-07-15 by Phil
I have a ton (ok, probably just 500 hundred pounds) of PCB material that I bought from a PCB house that went out of business. Its mostly 1 oz, double sided
PCB copper clad board
2005-07-15 by pensinnc
This guy, machinistmaterials, has some in eBay: http://cgi.ebay.com/ws/eBayISAPI.dll? ViewItem&category=36327&item=7530687770 It looks kind of thick at .093 ,
RE: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by John Craddock
Great if you re drilling for oil in 1000 feet of water in the Gulf of Mexico :-O)
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by Stefan Trethan
On Fri, 15 Jul 2005 09:26:47 +0200, Derryck Croker ... There s identical copies of proxxon by another brand, but i don t remember the
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by Derryck Croker
... The Exxon stuff looks good. (Of course I meant Proxxon!!) -- Cheers Derryck
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by Derryck Croker
... The Exxon stuff looks good. -- Cheers Derryck
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by Stefan Trethan
... Ok, thanks everyone, i see there are a few drawbacks. Depends how cheap i can get one if i ll still try or not (But probably not). Physical size is not
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by JanRwl@AOL.COM
In a message dated 7/14/2005 6:54:07 P.M. Central Daylight Time, wrmaxwell@bigpond.com writes: or an old dental pneumatic drill? Cumbersome to mount; have
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by Stefan Trethan
On Fri, 15 Jul 2005 01:53:05 +0200, Bill Maxwell ... not sure if the chuck is useable. You want to try? ST
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by JanRwl@AOL.COM
In a message dated 7/14/2005 4:04:06 P.M. Central Daylight Time, stefan_trethan@gmx.at writes: How loud are they? VERY! But worse, they consume a quantity of
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by JanRwl@AOL.COM
In a message dated 7/14/2005 2:23:03 P.M. Central Daylight Time, philpem@dsl.pipex.com writes: What PCB drills are you guys using? Anyone got any
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-15 by Earl T. Hackett, Jr.
Excellon and TrueDrill both used air powered drill in their NC equipment. They had radial air bearings but I m not sure if the thrust bearings were air or
Re: Another rookie starts a high volume pcb project.
2005-07-15 by Phil
I m not expert on this but I saw (somewhere) a discussion of capacitive coupling as an issue. Especially at higher frequencies. Phil ... copper is ... harm.
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-14 by Bill Maxwell
or an old dental pneumatic drill? I have several of those handpieces, somewhere. Bill ... From: Stefan Trethan To:
Re: [Homebrew_PCBs] Perfection at last!
2005-07-14 by David McNab
... 8
Re: [Homebrew_PCBs] Re: Another rookie starts a high volume pcb project.
2005-07-14 by David Cureton
Hi Stefan, It is my understanding that the copper islands or orphaned copper is removed to help with EMC (or do they call it FCC in the US) approval. You are
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-14 by Philip Pemberton
In message ... I suppose that s a good way to describe it... The end of the bit looks like a vibrating blur. The Expo
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-14 by Stefan Trethan
On Thu, 14 Jul 2005 22:51:29 +0200, Earl T. Hackett, Jr. ... The drill bit should not look like any dog, ever, tail or no tail ;-) What i really wanted to say,
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-14 by Earl T. Hackett, Jr.
When running, the drill bit should not look like a dog wagging its tail. I m not sure about the others, but those of us on other lists who do a lot of
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-14 by Stefan Trethan
On Thu, 14 Jul 2005 21:23:37 +0200, Philip Pemberton ... I d put the proxxon IB-E on the shortlist. It has good bearings, and more importantly good hardened
Re: [Homebrew_PCBs] PCB drill recommendations
2005-07-14 by Leon Heller
... From: Philip Pemberton To: Sent: Thursday, July 14, 2005 8:23 PM Subject: [Homebrew_PCBs] PCB
PCB drill recommendations
2005-07-14 by Philip Pemberton
Hi, Well, I m getting rather sick of my Expo Reliant breaking drill bits. The chuck seems to be quite badly worn, and the bearings are utterly fried (not that