Re: URL Links for PCB Learning..
2010-08-03 by fredbutz
I m having issues understanding as well. But I find using laminated dry film photoresist to be a very easy process for home use. The only hard part is finding
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Roland DXY 800/880
2010-08-02 by casy_ch@tbwil.ch
Don Could you send me your private adress to . I have files for you. Jean-Claude ... From: VK3YV To: Homebrew_PCBs@yahoogroups.com
Re: [Homebrew_PCBs] Re: Inkjet or Laser for PCB work?
2010-08-02 by VK3YV
Hi Jean-Claude, that is a big help, now I need to know the DIP switch settings, I will be using the parallel port, and hopefully be able to use it with win xp,
Re: [Homebrew_PCBs] Re: Inkjet or Laser for PCB work?
2010-08-02 by casy_ch@tbwil.ch
Hi Don In the past I have had a DXY800 and later a DXY1150. All use HPGL (Hewlett Packard Graphic Language). Your programm should have a HPGL driver and will
Re: [Homebrew_PCBs] Re: Inkjet or Laser for PCB work?
2010-08-02 by VK3YV
Hi, on seeing you are using a Roland Plotter for pcb drawing I have a query, I have a Roland DXY 800 for which I have no information i.e.. dip switch settings
Re: [Homebrew_PCBs] Re: Inkjet or Laser for PCB work?
2010-08-02 by P COUNSELL
Unfortunately athough I have some pens whuch were designed for pcbs they are no longer availabe for rowland plotters. I do not see that as a big problem . I
Re: [Homebrew_PCBs] Re: Inkjet or Laser for PCB work?
2010-08-02 by P COUNSELL
I modified my DXY880a very easily by using a piece of standard pcb board so that the pen height was perfect for standard thickness pcbs. ... From: borgrailuk
Re: Inkjet or Laser for PCB work?
2010-08-02 by borgrailuk
Hi, Sounds interesting. How did you modify the plotter pen height and which pens/ink did you use? I have a DXY1200 - not too keen to modify height but am
Re: URL Links for PCB Learning..
2010-08-02 by bebx2000
... Athar, I am having a bit of difficulty understanding your objective. If you are researching modern photoresists, you need a PhD in organic chemistry to
URL Links for PCB Learning..
2010-08-01 by Athar Kaludi
Hi All I found these links useful for PCB fabrication learning. Very descriptive and explanatory
Re: Photo Resist Gelatin Bicromate Process
2010-07-30 by garydeal
... Yes, quite. If you ve seen the Erin Brockovitch (sp?) movie, the substance that was getting into the groundwater (and ruining people) was hexavalent
Photo Resist Gelatin NO Bicromate Process
2010-07-30 by Athar Kaludi
Gary Thanks for reply. Helpful. I also want to get rid off the bicromate. As you mentioned can you name the chemical name so that i can also try that. Secondly
Re: Nickel and Silver Print from MG for through hole plating
2010-07-30 by Athar Kaludi
Calin Go ahead with Nickel print as trial if you can afford. Conductive paints work as the word specify. Your purpose will solve, but only for prototyping
Nickel and Silver Print from MG for through hole plating
2010-07-30 by morarcalin
MG Chemicals has two conductive prints that they claim can be used for hole plating. Like I said they claim :)) ... so no idea if they really work. That s
Re: Modifying a Epson Stylus 220
2010-07-30 by alienrelics
You should ask this on the Inkjet PCB Construction list. http://tech.groups.yahoo.com/group/Inkjet_PCB_Construction/ James Newton collected some of the more
Re: [Homebrew_PCBs] Modifying a Epson Stylus 220
2010-07-30 by Bob Butcher
It seems to me that you might want to find a flat bed ink jet printer, perhaps one that uses solvent based ink, such as the PromoJET Solvent Flatbed Inkjet
Re: [Homebrew_PCBs] Modifying a Epson Stylus 220
2010-07-30 by Bob Butcher
It appears to me that the Epson Stylus 520 is a roll type printer rather than a flat bed printer. How do you plan to handle rigid PCB material without bending
Kinsten TAIWAN thru hole .. Any One USED/Experienced this
2010-07-29 by Athar Kaludi
The process offered by KINSTEN Taiwan for thru plating is shown in link below. If any one using just help me providing info on the GEL which the person is
Re: PCB Tinning Chemicals!!!
2010-07-29 by rsuttonuk
... Depends on how much you require, you can get the Mega Electronics products as mentioned by Leon from Rapid Electronics - http://tiny.cc/rx3gf Rob
Re: Photo Resist Gelatin Bicromate Process
2010-07-29 by bebx2000
... Bichromated (dichromated) gelatin has a long history in the area of alternative photographic procrsses. There is a book entitled, Photoresist by W.S.
[EE] DIP MICRO
2010-07-29 by Steve Maroney
I don t remember which mailing list someone recommended dipmicro electronics as a good source for copper clad but I ordered some supplies from them on Jul 27
Re: [Homebrew_PCBs] Modifying a Epson Stylus 220
2010-07-29 by Kamal Edirisinghe
Hi Bob, Your point is understood. I need to get the printer modified first and then look for a suitable ink. Hoping somebody will come up with a answer to my
Modifying a Epson Stylus 220
2010-07-29 by Bob Butcher
Modifying the printer is only part of the problem. Have you tested the ink to see if it is waterproof? If you use water based ink, the etchant will dissolve
Re: [Homebrew_PCBs] Photo Resist Gelatin Bicromate Process
2010-07-29 by James Bishop
Sounds interesting. I did a google search and what you are talking about seems to be called Dichromated Gelatin. It is used for making holograms. Apparently it
Modifying a Epson Stylus 220
2010-07-29 by Kamal Edirisinghe
Dear Friends, Has anybody modified a Epson Stylus 220 for PCB printing. I do not have a Epson Photo 220 ,so I opened what I have . Almost all the plastic
Re: [Homebrew_PCBs] Re: New GBC H65
2010-07-29 by Gokhan Nalbant
Thank you for all the answers. I ll try to find 0.032 boards, but as fas as I understand there is no harm using thicker boards. Pushing a little bit is not a
Re: [Homebrew_PCBs] Photo Resist Gelatin Bicromate Process
2010-07-29 by Leon Heller
... Be careful with ammonium bichromate, chromium compounds are very toxic. Leon -- Leon Heller G1HSM
Photo Resist Gelatin Bicromate Process
2010-07-29 by Athar Kaludi
Hi All I come across a guy making a printing block of Printing press on Zinc Plate by exposing in sunlight by negative film. Then after developing he etch to
RE: [Homebrew_PCBs] Re: New GBC H65
2010-07-29 by Steve Maroney
The Pulsar site states that .062 will work but requires a push on the board as it goes in and pull as it comes out, otherwise the motor will not move the board
Re: New GBC H65
2010-07-28 by sailingto
I have the H-65 laminator and it handles .062 PCB material ok - by beveling the edges of PCB material it works just fine. Without beveling sometimes a tad
Re: [Homebrew_PCBs] New GBC H65
2010-07-28 by Harvey White
... I used a royal laminator and modified it. The Royal has multiple heat settings, I use foil . However, if you are going to make double sided boards, it
New GBC H65
2010-07-28 by Gokhan Nalbant
Hi, Finally, I have a GBC H65 laminator, Pulsar transfer paper and GreenTRF folio. I have found out that I have to mod the heating level first. This seems
Re: [Homebrew_PCBs] PCB Tinning Chemicals!!!
2010-07-27 by casy_ch@tbwil.ch
Hi Have you checked with electronic components distributors. Here I get silbering powder from them. It s easy to apply and does not mess up any chemical
Re: [Homebrew_PCBs] PCB Tinning Chemicals!!!
2010-07-27 by lists
In article , ... May I suggest looking in your local yellow pages for chemical suppliers/laboratory suppliers. -- Stuart Winsor
Re: [Homebrew_PCBs] PCB Tinning Chemicals!!!
2010-07-27 by lists
In article , ... I live in the Cleveland, Ohio area. I don t know where you are located. ... ^^^^^^^^^^ Hmmm. --
Re: Now, tinning
2010-07-27 by designer_craig
Sulfamic Acid (H3NS03) is correct for this formula. I have also seen formulas that use Sulfuric acid and suspect they work in a similar way. The Sulfamic acid
Re: Now, tinning
2010-07-27 by James
... I ve been using Tinnit, it works fine and deposits a nice layer of tin. You have to heat it though for it to work so it s a bit of a pain, and once mixed
Re: [Homebrew_PCBs] PCB Tinning Chemicals!!!
2010-07-26 by john sakellakis
HI Christofer: I happen to have two full gallons of tin plate concentrate solution. You dilute it, and you take a clened pc board, dip it into the
Re: [Homebrew_PCBs] PCB Tinning Chemicals!!!
2010-07-26 by Leon Heller
... Mega Electronics sells them ready-mixed. You just need to add water. Leon -- Leon Heller G1HSM
Re: Now, tinning
2010-07-25 by fredbutz
Also, there is a product called Cool-Amp Silver Plating Powder. http://www.cool-amp.com/cool_amp.html I ve used it some. I plan to do a comparison soon and
Re: Now, tinning
2010-07-25 by fredbutz
You sure it isn t Sulfuric Acid? I saw another formula, same chemicals, but used Sulfuric Acid instead of Sulfamic Acid. I just want to try the Ham Radio
PCB Tinning Chemicals!!!
2010-07-24 by Christopher
Hi! Can anyone offer me sources of supply of PCB Tinning Chemicals (Stannic chloride, etc.,) in the UK? The suppliers in the Now Tinning thread post to the
Re: Now, tinning
2010-07-23 by designer_craig
Simao, Having all the chemicals (3) in dry form is the advantage over other prepackaged liquid plating systems. You just mix up what you need for the number
Re: [Homebrew_PCBs] Re: Now, tinning
2010-07-23 by Simao Cardoso
Six month ago people were complaining that MG chemicals Liquid tin is too expensive. This mixture is more expensive, harder to use and useless for making
RE: Hot Plate
2010-07-23 by Mike
On the Reprap forums we have been discussing various ways to make/use heated beds to prevent warping of plastic parts as they are extruded.An inexpensive way
Re: Now, tinning
2010-07-22 by bebx2000
... Andrew, You can find your chemicals on eBay from quartzpegmatite at very reasonable prices and shipping costs,
Re: Now, tinning
2010-07-22 by designer_craig
I don t think the Diethyl Thiourea is the correct chemincal but its been a long time since chemistry 101. The articel lists Thiourea which is I think is CAS
Re: Now, tinning
2010-07-22 by designer_craig
I got my chemicals back in 1972 from my college chemistry department to do the boards for my 8 digit frequency counter senior project. I did a lot of borads
Re: Be Careful with ExpressPCB
2010-07-21 by Nader Atifeh
I am working with ExpressPCB for almost 3 years and have not seen such a problem. I print the files on a pdf format, open them in Photoshop and inverse the
Re: Now, tinning
2010-07-21 by Andrew
I just now did a bit of searching was able to find all of these chemicals for sale on-line in the U.S. It looks like thiourea is the most expensive, running