Re: Before Ironing the Printed Schematic - what do you?
2010-08-27 by Ben L
... Think he said Muratic Acid with hydrogen Peroxide, not just Muratic Acid. Yes this will etch a board very nicely. As you etch the copper in the solution
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Re: [Homebrew_PCBs] Re: Before Ironing the Printed Schematic - what do you?
2010-08-26 by Derward Myrick
Steve the muratic acid by its self will only clean the copper oxide. If you put copper in muratic acid it will clean it and if left in the acid it will not eat
Re: [Homebrew_PCBs] Re: Before Ironing the Printed Schematic - what do you?
2010-08-26 by Bob Macklin
Don t bother with the Creative laminator. You would just be wasting your money. The process needs the higher temperature of the Personal . The Pulsar
Re: Before Ironing the Printed Schematic - what do you?
2010-08-26 by alienrelics
Muriatic acid is also used to clean bricks and is available at many hardware stores. CuCl is what you end up with when you use muriatic acid and hydrogen
Re: Before Ironing the Printed Schematic - what do you?
2010-08-26 by kumuzu1
Morarcalin and others, I m a bit of a newbie here. What was your experience like with the Laminator? The Pulsar site seems to suggest you need the Personal
Re: Before Ironing the Printed Schematic - what do you?
2010-08-26 by Frank P
morarcalin, Using Comet was a new one on me. Doesn t it create scratches? Regardless, it sounds like you re getting good results. You mentioned a GBC laminator
Re: Before Ironing the Printed Schematic - what do you?
2010-08-26 by Frank P
Andy, I believe the pool etch solution that was referenced, is in reference to using muriatic acid (use to maintain swimming pools). You can buy it at Ace
Re: [Homebrew_PCBs] Re: Brother HL2140 Laser Printer
2010-08-25 by Ronald Shaul
Did you alter the settings in the printer driver for paper type or darker? ________________________________ From: Steve To:
Re: [Homebrew_PCBs] Re: Before Ironing the Printed Schematic - what do you?
2010-08-25 by Bob Macklin
Chlorine! Bob Macklin K5MYJ Seattle, Wa. Real Radios Glow In The Dark ... From: Alessio Sangalli To:
Re: [Homebrew_PCBs] Re: Before Ironing the Printed Schematic - what do you?
2010-08-25 by Alessio Sangalli
... Exactly, I ve never heard of this technique, and I am interested. bye as
RE: [Homebrew_PCBs] Re: Before Ironing the Printed Schematic - what do you?
2010-08-25 by Andrew Volk
Moracalin - Sorry, I am new to this list, so I am not familiar with the term pool etching solution. Can you elaborate? Thanks, Andy _____ From:
Re: [Homebrew_PCBs] Re: Before Ironing the Printed Schematic - what do you?
2010-08-25 by Bob Macklin
I do the acetone first. The I use the Comet powder with bleach. Then I work it over with the 3M green pad. Bob Macklin K5MYJ Seattle, Wa. Real Radios Glow In
Re: Before Ironing the Printed Schematic - what do you?
2010-08-25 by morarcalin
I do this: 1 - Wash/clean with Comet powder then rinse with tap water 2 - Then wipe with Acetone 3 - Tonner transfer ... etch ... and so on I do not use a
Re: Brother HL2140 Laser Printer
2010-08-25 by Steve
... I have this model printer,and have been doing toner transfers to copper sheet pretty succesfully. I m using a regular iron for the process,and printing on
Re: Brother HL2140 Laser Printer
2010-08-25 by sailingto
Have you done Toner Transfer with the Brother 2140? Is this not one of the 2000 series Brother printers that require over 400F to melt the toner? Ken
Brother HL2140 Laser Printer
2010-08-24 by Ronald Shaul
For your information; a Big Box electronic store has the Brother HL2140 Laser Printer for $49.99. This can be used to do toner transfer. [Non-text portions of
Re: Now, tinning
2010-08-21 by designer_craig
I don t know the oil temp but it had to be at least 182C or 362F at a minumum. I think you cook chicken at 360 to 400F. so its not all that hot. The smoke
RE: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
2010-08-21 by Tony Smith
... If you snip wire you ll notice the end will flare out slightly. If you take some pliers and squash the end of the wire, you can spread it out enough so it
Re: Now, tinning
2010-08-21 by fredbutz
I never thought of a hot oil bath. Do you know how hot it was?
Re: Now, tinning
2010-08-21 by designer_craig
I will have to give that a try after I get my Bridgeport CNC conversion finished. A company I worked at had a captive PCB shop, they would Tin/LED plate the
Re: [Homebrew_PCBs] Before Ironing the Printed Schematic - what do
2010-08-21 by Matthew Andrews
I use a sponge and some Barkeepers friend it s a powder cleaner that comes in a gold can much like comet , or ajax come in. It s based on oxalic acid, and
Re: Copper Foil Vias, Correct URL
2010-08-20 by sailingto
I expect he means the same as I ve done - sorta brad the ends of the wire to make the wire very tight in the hole so it won t fall out while soldering or
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Bob Macklin
The tin will not grow whiskers if you use a urethane over coat. The new ROSH solder will grow whiskers too! Bob Macklin K5MYJ Seattle, Wa. Real Radios Glow In
Re: Now, tinning
2010-08-20 by fredbutz
Just as an FYI, when I do use the tin, I do it after the solder mask. So there aren t any traces to change the impedance. But while were on the negatives. :)
Re: Now, tinning
2010-08-20 by fredbutz
Craig, I don t wet etch. After plating I use the CNC mill and mechanically etch the traces. Then solder mask using the same process as the resist. Then Tin.
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Malcolm Parker-Lisberg
Alessio It does not short two tracks, but adds a high value of resistance between the tracks, more of a problem on low power digital and analogue systems.
Re: Now, tinning
2010-08-20 by designer_craig
Larry, Glad the tin formula worked out for you, I did lots of boards with it. Looks like you have a nice PCB processing setup. Your hole activation and
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Bob Macklin
Yes, I have used it in the past. It does a good enough job. The purpose of the tin plating is to keep the copper from turning green. The PCB houses in the 60 s
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Alessio Sangalli
... I am not a very analog guy because I think in terms of short or open . What do you mean exactly here? Is the tinning shorting tracks? My question at
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Alessio Sangalli
... Have you tried it? bye as
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Bob Macklin
What s wrong with using this stuff? http://www.allelectronics.com/make-a-store/item/ER-18/TINNIT-BRIGHT-TIN-PLATE//1.html Bob Macklin K5MYJ Seattle, Wa. Real
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Malcolm Parker-Lisberg
Looks good, thanks, nice to know the formula works. One thing I found with electroless tin was that when used on PCB tracks on a high impedance circuit, was
Re: Now, tinning
2010-08-20 by fredbutz
On the paper. I originaly planned to measure each chemical out before combining them but then just ended up combining them. So no reason other than the
Re: Nickel and Silver Print from MG for through hole plating
2010-08-20 by morarcalin
Here is the second try result. This time it covered better the via holes, especially the one in the large pads - talking about headers rows etc - 20 mils
Re: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
2010-08-20 by Alessio Sangalli
... Can you explain crimp it ? With what tool? Do you have a picture? bye as
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-20 by Alessio Sangalli
... I think they were mentioned in some earlier posts but it would be nice to have a confirmation. Fred, I loved the video BUT: why did you use a new paper for
Re: Copper Foil Vias, Correct URL
2010-08-20 by James
... What I ve been doing is drilling a hole exactly the right size for a piece of #22 wire. I poke that through, clip it off as close as I can to the board and
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-19 by Larry Battraw
... Can you let us know what items you got from eBay, from which sellers? I haven t seen the video, so I don t know what you mention there. Might be easier to
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-19 by Erik Knise
Great video. Thanks for posting it ... -- Erik L. Knise Pacific Shipping Company Seattle, WA [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
2010-08-19 by Bob Macklin
I did not mean to put a surface mount uP in a socket. I use PIC uPs in DIP packages when possible. These are the ones I socket. I don t mind using DIPs if the
Re: Now, tinning
2010-08-19 by fredbutz
You can find the video on this link here. http://www.voodooengineering.com/index.php/component/content/article/46-tinning/89-diy-tin-plating-solutiion Me
Re: Now, tinning
2010-08-19 by fredbutz
You can find the video on this page. http://www.voodooengineering.com/index.php/component/content/article/46-tinning/89-diy-tin-plating-solutiion
Re: Copper Foil Vias, Correct URL
2010-08-19 by fredbutz
The conductive ink? I purchased the 50 gram bottle from Think and Tinker in the summer of 2009. I hadn t gone bad or anything so far. I ve done maybe 20 4x6
Re: Now, tinning
2010-08-19 by fredbutz
Well I tried it. Worked great for me. I made a video and will post it tomorrow afternoon. me
Re: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
2010-08-19 by Erik Knise
I ve never put a surface mount micro in a socket because they are usually QFPs I ve never tried to put a home brew via under one of those chips but for a few
Re: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
2010-08-19 by Bob Macklin
If you are socketing your microcontrollers you can use the better sockets that have machined pins. These can be soldered on the top side of the board. Wires
Re: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
2010-08-19 by Erik Knise
This is actually a great link. Thank you Chuck. I have only made one board so far and I ve been discouraged because I ve needed to put vias under some surface
Re: Copper Foil Vias, Correct URL
2010-08-19 by fredbutz
I like it not just for the connection between layers. I love the way the solder is wicked into the hole when soldering a thourgh hole plated board. I hate the
Re: [Homebrew_PCBs] Re: Now, tinning
2010-08-19 by Bob Macklin
I just bought the DATAK TinIt solution from All Electronics. They are dry crystals that you have to mix. Bob Macklin K5MYJ Seattle, Wa. Real Radios Glow In
Re: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
2010-08-19 by Bob Macklin
Interesting but expensive for doing just a few boards. Also I really don t like working with battery acid. It would take me longer to do this for 5 or 10