board mounting holes
2005-03-11 by Stefan Trethan
Hi, anyone using a punch like that? I would like to try one, so before going through
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Re: [Homebrew_PCBs] has anyone worked on the rotary spray etcher?
2005-03-11 by lists
In article , ... How about PTFE. Not cheap I know but self lubricating and resistant to pretty well all chemicals
Re: [Homebrew_PCBs] automatic cucl maintainance
2005-03-11 by Stefan Trethan
one should also read other pages on this server... pages 4 and 5 ... very interesting for everyone trying to understand
automatic cucl maintainance
2005-03-11 by Stefan Trethan
we discussed this a while back, how it might be done, today i stumbled across that: When Hydrogen Peroxide and Hydrochloric Acid (HCl) are used to replenish
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-11 by Stefan Trethan
On Fri, 11 Mar 2005 11:33:42 -0500, Earl T. Hackett, Jr. ... so that means what? big bubbles are better? spray etchers are awfully complicated to build and i
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-11 by Earl T. Hackett, Jr.
The objective in any etching system is to replace the spent etchant at the surface of the board with fresh. The speed of the etchant moving doesn t contribute
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-11 by Stefan Trethan
On Thu, 10 Mar 2005 22:47:31 +0100, lists ... I m curious about ultrasonic myself, but nobody having a ultrasonic cleaner has agreed to put in a plastic bag
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-11 by Stefan Trethan
... tried it, it works but bubbler works better and no danger of board slipping out of holder. ST
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-10 by Ed Okerson
Or you could attach a pager motor to the outside of the etching tank. http://www.pagermotors.com/index_files/English/Parts.htm Ed Okerson
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-10 by lists
In article , ... How about sitting the tray on the cone edges of an old loudspeaker - say about an 8 . With a tone
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-10 by Leon Heller
... From: Peter Johansson To: Sent: Thursday, March 10, 2005 7:22 PM Subject: Re: [Homebrew_PCBs] Re:
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-10 by Leon Heller
... From: Phil To: Sent: Thursday, March 10, 2005 6:24 PM Subject: [Homebrew_PCBs] Re: bubbler - more
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-10 by Peter Johansson
... I m a newbie to the group. The last time I etched a board was perhaps 20 years ago masked with an etch-resistant pen. I ve been mostly a software guy
Re: bubbler - more even spread of bubbles
2005-03-10 by Phil
I m thinking of going to a mechanical agitator to move the board up/dn but have no idea if it will work well. I figure something around 100 hz to start with.
Re: [Homebrew_PCBs] Re: software 4 milling pcb ulp
2005-03-10 by Brian Pitt
... I think outlines.ulp was it ,I don t have eagle on this confuser so I m going from memory ,go to the file menu pick run and dig around for the .ulp
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-09 by Stefan Trethan
... Damn, and thank you for that post. I almost bought one of the hard/brittle variety just now. (two of 3 ebay sellers have relpied within 5 minutes, one is
Re: bubbler - more even spread of bubbles
2005-03-09 by Phil
One I had was a blue tube say 2 cm diameter and 3-4 cm long. It felt hard but brittle. I thought it was some sort of foamed glass but when it fell apart it
Re: [Homebrew_PCBs] Re: bubbler - more air for bigger bubbles
2005-03-09 by Stefan Trethan
On Thu, 10 Mar 2005 08:08:45 +1100, Adam Seychell ... I just wrote a series of questions to ebay guys selling interesting bubblers, asking which material they
Re: [Homebrew_PCBs] Re: bubbler - more air for bigger bubbles
2005-03-09 by Adam Seychell
... I ve had the same experience. Nylon is the culprit. I ve heard before that big bubbles produce more a agitation. This is where you need more air than
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-09 by Stefan Trethan
... Phil, which material were these? I got a round one with the pump that is a blue material, very much like a grinding stone in texture, very hard. I wonder
Re: [Homebrew_PCBs] Re: software 4 milling pcb ulp
2005-03-09 by Cristian
... No Cristian
Re: [Homebrew_PCBs] Re: bubbler - more even spread of bubbles
2005-03-09 by Stefan Trethan
... Ok, thanks for the warning. ST
Re: bubbler - more even spread of bubbles
2005-03-09 by Phil
I ve have very bad luck with several of the fish tank bubblers and CuCl (air stone is one product name). They fell apart in the CuCl after around 6-8 hrs
Re: software 4 milling pcb ulp
2005-03-09 by lanebarr@bellsouth.net
there are a few ULPs for eagle that will do an isolation path ok I fount a pile of ulp files which one should i use ??? OUTLINES??? how do you run a ulp from
Re: [Homebrew_PCBs] software 4 milling pcb
2005-03-09 by Stefan Trethan
... You can try eagle, or target. target test verion (100pin) can be downloaded at www.ibfriedrich.com. It has isolation milling output. ST
Re: [Homebrew_PCBs] software 4 milling pcb
2005-03-09 by Brian Pitt
... there are a few ULPs for eagle that will do an isolation path one is over here (you may have to sign in to get it)
Yahoo group for FreePCB
2005-03-09 by Rick Collins
I could not find much info on users of FreePCB, so I started a Yahoo group. FreePCB is an open source program for PCB layout. It works with a netlist from
Re: bubbler - more even spread of bubbles
2005-03-09 by Ben H. Lanmon
I have a 5 gal. tank and use Ferric Chloride can etch upto 4 single sided 8 x 12 boards in it. I have three rows of 1/2 CPVC pipe across the bottom with I
software 4 milling pcb
2005-03-08 by lanebarr@bellsouth.net
Hello group, My name is Lane and I am an electronics / robotics / computer / network tech with a strong mechanical background. I have been making boards for
Re: [Homebrew_PCBs] bubbler - more even spread of bubbles
2005-03-08 by Earl T. Hackett, Jr.
In our lab plating tanks we used 1 PVC pipe with two rows of 1/16 holed on 1 or shorter centers at 45° up from the bottom. These were big tanks (about 80
[Homebrew_PCBs] CuCl Hydrometer
2005-03-08 by Stefan Trethan
Hi, remember when i whined a wile ago that i have broken my nice hydrometer pipette (a huge eyedropper where the hydrometer swims inside and you simply suck
Re: [Homebrew_PCBs] bubbler - more even spread of bubbles
2005-03-08 by Stefan Trethan
On Tue, 08 Mar 2005 11:42:03 GMT, Philip Pemberton ... I use a cheap fish tank air pump too, but i don t have a blue foam bubble hose
Re: [Homebrew_PCBs] bubbler - more even spread of bubbles
2005-03-08 by Philip Pemberton
In message ... I ve been using a cheap fish tank air pump and a blue foam bubble hose. The bubble hose has been bleached white
Re: [Homebrew_PCBs] bubbler - more even spread of bubbles
2005-03-08 by Stefan Trethan
On Mon, 7 Mar 2005 18:38:59 -0500, Earl T. Hackett, Jr. ... that s 0.05mm!!!! what wire did you use? how did you do that? Think and tinker says larger bubbles
Re: [Homebrew_PCBs] bubbler - more even spread of bubbles
2005-03-07 by Earl T. Hackett, Jr.
Lots more smaller holes. I ve been making 0.002 holes with a hot wire. ... From: Stefan Trethan To:
bubbler - more even spread of bubbles
2005-03-07 by Stefan Trethan
Hi, want to raise the bubbler question once again, I use a plastic hose with 6 holes in it, made by hot needle. I have streaks on the pcb where the bubbles
Other inks in Epson print heads
2005-03-07 by Steve Greenfield
It has been mentioned here and elsewhere that desktop Epson printers cannot handle solvent inks due to the inability of various parts other than the heads
Looking for a 555 pcb
2005-03-05 by pensinnc
If anybody has made a 555 board that can be used as a frequency generator, I would appreciate if you let me know by email. All I need is a board with the
Re: Providers of CNC routed "Printed" Circuits ? ?
2005-03-03 by crankorgan
http://www.pcbmilling.com/ ... repairs and
Re: [Homebrew_PCBs] ESR Measurement Kit
2005-03-03 by Stefan Trethan
On Thu, 3 Mar 2005 10:50:01 -0800, Terry Mickelson ... I considered that one before i built mine, it is pretty nice, but was too expensive
Re: [Homebrew_PCBs] ESR Measurement Kit
2005-03-03 by Terry Mickelson
I bought the Australian designed kit for the Dick Smith ESR meter locally from a distributer close to me for $80 Canadian. The meter measures low ohms from
Re: [Homebrew_PCBs] ESR Measurement Kit, was: Question on printers for TT
2005-03-03 by Stefan Trethan
... in circuit, you don t need to desolder anything. You should power off the unit, because AC signals on the cap can influence the result, but you don t need
Re: [Homebrew_PCBs] ESR Measurement Kit, was: Question on printers for TT
2005-03-03 by Lez
Am I missing something here, does it measure it resistance when in circuit and running? Do you the plug/connect the cap into the box and it performs a test
Re: [Homebrew_PCBs] ESR Measurement Kit, was: Question on printers for TT
2005-03-03 by Stefan Trethan
On Thu, 03 Mar 2005 16:04:42 -0000, bill_at_pearl ... Not a kit, but a schematic for a very easy to build one:
Providers of CNC routed "Printed" Circuits ? ?
2005-03-03 by Bill P @ PEARL
Hi All: I m looking for a privateer or a company who can provide CNC-routed, rather than etched, PCBs. I have to make up several one-off extender boards for
ESR Measurement Kit, was: Question on printers for TT
2005-03-03 by bill_at_pearl
... Series Resistance. [snip] ... Hi: From whom did you buy the abovementioned kit ? ? Thx
Re: CuCl disposal, "flip stick", burning
2005-03-03 by Dave
... Not if the Chlorine reacts with the positive electrode material. I ve had some success with a very limited trial of extracting Copper using an Iron
Re: [Homebrew_PCBs] Question on printers for TT
2005-03-02 by Jason Giglio
... Have you considered it might have been printed on a normal lithographic printing press?
Re: [Homebrew_PCBs] Question on printers for TT
2005-03-02 by Stefan Trethan
On Wed, 2 Mar 2005 11:27:51 -0800, Terry Mickelson ... Ask the supplier? ST
RE: [Homebrew_PCBs] Lamps, was lexmark m412 board results
2005-03-02 by Tony Smith
... HP lamps are like that too, from what I remember. The one with the wire attached was from a Canon photocopier. I think they did this to reduce