Re: Anyone tried using Rayzist film?
2004-03-22 by Steve
Darn, I missed the part about removal by water. Thanks, Steve
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Re: making one sided boards
2004-03-22 by twb8899
Dave, If you go through the trouble of chemical etching just one side then you should do the whole job that way. It wouldn t take much more effort to etch the
Re: [Homebrew_PCBs] Re: Anyone tried using Rayzist film?
2004-03-22 by Zoran A. Scepanovic
Hello ballendo, Monday, March 22, 2004, 12:07:34 PM, you wrote: b I read the how to use it instructions, and there appear to be a b couple of concerns. b
Re: [Homebrew_PCBs] Re: making one sided boards
2004-03-22 by Jeremy Taylor
For the Hydrogen PER oxide. You can get 29% at a local pool/hot tub supply store, It s referred to as Shock and is cheap. Also a source albeit more
Re: [Homebrew_PCBs] Re: Sodium Persulfate?
2004-03-22 by Rick C.
I have made over 10,000 home made boards in my lifetime and I speak from experience. The crystal power will keep indefinitely. I have never had a problem
Re: making one sided boards
2004-03-22 by Dave Mucha
... etch. ... maybe it ... I think I am spoiled, The first batch of boards I had were of some other substrate and the copper pealed off easily. I can get
Re: Anyone tried using Rayzist film?
2004-03-22 by ballendo
Hello, I read the how to use it instructions, and there appear to be a couple of concerns. First, it is not clearly stated but it seems that this is NOT a
Re: [Homebrew_PCBs] making one sided boards
2004-03-22 by Stefan Trethan
The same here.... It s normally not coming off by peelig from FR4 you will have to etch. Get yourself some muratic acid and H2O2 and then etch the boards. I
Re: [Homebrew_PCBs] Re: Inkjet printing to make circuit stick to substrate
2004-03-22 by Stefan Trethan
That isn t going to work.. the solder will bead up, never form continuous useable traces. try it with copper and solder filings and colophony powder. If you
making one sided boards
2004-03-22 by Dave Mucha
Hi all, I have a few sheets of 90 mil FR-4, (red imprint) that is double sided. I need to do a lot of 1 sided boards and instead of ordering one sided, I think
Re: [Homebrew_PCBs] Sodium Persulfate?
2004-03-22 by JanRwl@AOL.COM
In a message dated 3/21/2004 6:40:15 PM Central Standard Time, jim@jtmiller.com writes: ammonium persulfate which although clear and allows viewing the etch
Re: Inkjet printing to make circuit stick to substrate
2004-03-22 by rmustakos
I don t know what to say about ionic contamination either, I have no idea what it is ;) How does it effect a board? Does it rot the FR-4? If I m just
Re: Anyone tried using Rayzist film?
2004-03-22 by Ben H. Lanmon
... Well price wise it looks like it runs $5.71/sheet for 25 sheets upto $6.90/sheet for 5 sheets. Did not see anything about how it stands up in water, they
Re: [Homebrew_PCBs] Re: Inkjet printing to make circuit stick to substrate
2004-03-22 by Ron Amundson
... Ionic contamination creates low impedance shorts all over the board. Sometimes they will not exist when you first power the board up, but can show up in a
Re: [Homebrew_PCBs] Re: Sodium Persulfate?
2004-03-22 by Rick C.
The crystals unmixed will keep indefinitely. Once dissolved and the cayalyst added, it will begin to slowly weaken. I have mixed a portion of solution and did
Re: Sodium Persulfate?
2004-03-22 by mdgolfbum
Rick Thanks for the quick response. Any benefits? FeCl is a big stainer but keeps well. Any info on SP like shelflife, disposal issues, staining, smell? tnx
Re: [Homebrew_PCBs] Re: Sodium Persulfate?
2004-03-22 by Ron Amundson
FeCl is a big stainer ... No smell, no staining, shelflife is 2 weeks. You cannot reuse if like FeCl. Heating it tends to make it work much better. Here is a
Re: [Homebrew_PCBs] Re: Inkjet printing to make circuit stick to substrate
2004-03-22 by Ron Amundson
... One of my friends tried that, but found that he was unable to clean it, plus he also had ionic contaminants that migrated into the laminate. It might be
Anyone tried using Rayzist film?
2004-03-22 by Steve Greenfield
I have to investigate this more... it looks like a photosensitive film that develops in water, and sticks down without heat. It is made for sandblast
Re: [Homebrew_PCBs] Sodium Persulfate?
2004-03-22 by Rick C.
It s basically the same stuff as far as performance. Rick
Sodium Persulfate?
2004-03-22 by mdgolfbum
M&G lists sodium persulfate as an alternative to FeCl. Anyone tried it? I ve already read the archives and haven t seen any actual use. Most alternative
Re: [Homebrew_PCBs] Re: Gerber > Eagle
2004-03-21 by Cristian
... EasyPC too. ... [Non-text portions of this message have been removed]
Re: Inkjet printing to make circuit stick to substrate
2004-03-21 by Richard Mustakos
Ron, Thanks for the info. From what you said, I read that Ammonium Chloride is useful as a flux, but will eat up non copper metals, is that correct? I know
Re: Gerber > Eagle
2004-03-21 by ralucas4277
Leon, yes, could do that, but what do you use to do the isolation of the tracks/pads etc before you turn the DXF into gcode? Thats where eagle comes in, unless
Re: [Homebrew_PCBs] Re: Gerber > Eagle
2004-03-21 by Leon Heller
... From: ralucas4277 To: Sent: Sunday, March 21, 2004 12:51 PM Subject: [Homebrew_PCBs] Re: Gerber
Re: [Homebrew_PCBs] Re: Gerber > Eagle
2004-03-21 by Leon Heller
... From: ralucas4277 To: Sent: Sunday, March 21, 2004 12:51 PM Subject: [Homebrew_PCBs] Re: Gerber
Re: Gerber > Eagle
2004-03-21 by ralucas4277
Hi Leon, The reason is that EasyPC does not produce a track/pad outline file which can be converted into a gcode file for running on the mill. Eagle does, in
Re: [Homebrew_PCBs] Gerber > Eagle
2004-03-21 by Leon Heller
jkkkkkkkkkkkkkkkkkkkkkkkllllll ... From: ralucas4277 To: Sent: Sunday, March 21, 2004 7:54 AM
Gerber > Eagle
2004-03-21 by ralucas4277
Can anyone help? I produce a gerber file from EasyPC, run it thru Eagle Power Tools Grb2Scr and import to Eagle 4.11. The file goes in and is displayed OK.
Re: Pulsar toner transfer?
2004-03-21 by Phil
funny, when i made a similar comment, I got told my comments were useless... but I tend to agree with you. at least I m not spending any more time on trying
Re: different types of board materials.
2004-03-21 by ballendo
Hello, Here ya go... http://www.felsweb.com/lam_faq.htm Ballendo ... Nice,
different types of board materials.
2004-03-21 by Dave Mucha
Hi all, I just ran out of one batch of boards. 1/16 with 1 oz copper. Nice, white substrate. This batch is deffinatly fiberglass as it has that recognizable
Re: Pulsar toner transfer?
2004-03-21 by mikezcnc
You are correct Phil.That Pulsar paper is a paper coated with dextrin. I tried to make that coating and I don t think it s possible at home due to inherent
Inkjet printing to make powdered copper,solder, flux stick to substrate
2004-03-20 by Richard Mustakos
Brewers, I want to try using an inkjet to moisten a mix of Cu, Sn/Pb and flux powders to make them stick together and to a substrate. Then I can dump or blow
Re: Pulsar toner transfer?
2004-03-20 by Phil
I dunno, at $1.50 a sheet, that seems a bit steep. The problem with this kind of stuff is that you (well, I did) waste a lot experimenting with the process.
Re: [Homebrew_PCBs] Inkjet printing to make powdered copper,solder, flux stick to substrate
2004-03-20 by Ron Amundson
Do any ... Amonnium Chloride is used for soldering copper tubing for plumbing. It is super corrosive, and will destroy electronics in short order. Check out
Re: [Homebrew_PCBs] Re: my TT technique and some pix
2004-03-20 by Stefan Trethan
... I know, i just wanted to say it doesn t matter for some circuits... there is no conductive and not conductive it s just a matter of moving electrons,
Re: my TT technique and some pix
2004-03-20 by Steve
... Yes, but try the same thing with an antistatic bag or antistatic IC carrier tube. They won t show on your meter, either, but they are in fact slightly
Re: [Homebrew_PCBs] Re: my TT technique and some pix
2004-03-20 by Stefan Trethan
... My meter shows nothing on a normal transferred line. some day i will put a bit of toner on paper and iron it to get a thicker layer. A line with a pencil
Re: my TT technique and some pix
2004-03-20 by ballendo
Hello, Yes, that s why I asked. I used to repair copiers, and that toner was definitely conductive. Ballendo ... it ... with ... seen ... try
Pulsar toner transfer?
2004-03-20 by Mark
Sorry for being a latecomer - the ground may have been covered before, but I ran out of patience looking thru yahoo s slow engine on my 26k (on a good day)
Re: Sensitizing PCBs yourself with a spray can
2004-03-20 by Ben H. Lanmon
... sensitizing ... G C Electronics now owned by Waldom website www.gcwaldom.com They make a spray pos. photo resist. Believe that Kepro use to have a
Re: my TT technique and some pix
2004-03-19 by Steve
It is carbon in a plastic that melts to hold it in place. So in a high impedance or high voltage circuit, it can cause problems, but for most circuits it would
Re: Fine soldering iron
2004-03-19 by Steve
... Why long? A very small stepper may be sufficient. Steve
RE: [Homebrew_PCBs] New file uploaded to Homebrew_PCBs - Note fro m author
2004-03-19 by Brian Schmalz
Jack, I d be happy to upload my ULP, and the program I use to send HPGL to the printer (Written in Liberty Basic). I haven t looked at them for about 2 years,
Re: [Homebrew_PCBs] New file uploaded to Homebrew_PCBs - Note from author
2004-03-19 by John Greene
Hi Brian, I have a HP 7475A and have been playing with the idea of plotting my PCB s. Would you be willing to part with a copy of your post processor for HPGL?
New file uploaded to Homebrew_PCBs - Note from author
2004-03-19 by Brian Schmalz
alienrelics , Those two board pictures that you just posted were done by me on my plotter. I drew the board up in Eagle, then wrote a
Re: Sensitizing PCBs yourself with a spray can
2004-03-19 by ghidera2000
Make SURE you obtain, read, and understand the Material Data Safety Sheet (MSDS). Follow all safety precautions. I considered trying a similar product some
Re: [Homebrew_PCBs] Re: my TT technique and some pix
2004-03-19 by Stefan Trethan
... You can repair potentiometers with ironing on toner. i would not put it on if i have top-level copper. I actually thought about trying to print on
Re: [Homebrew_PCBs] Re: Fine soldering iron
2004-03-19 by Stefan Trethan
... oh thanks, that s it. It sounded exactly like you describe it. It works with the flowrate of the tip, i didn t think of that. ST