Re: [Homebrew_PCBs] Resist ink pens
2010-04-29 by Stefan Trethan
Staedtler lumocolor permanent OHP pen red. Also get the refill tank, you need to lay down a solid line which works best with a fresh pen. Recently I came
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Re: direct laser PCB
2010-04-29 by gnuvvekaavaali
... Mark, great job. Look forward to the details of the mod. ... Seems like an awesome deal for $26 on ebay -
Re: Resist ink pens
2010-04-28 by rlspell2000
Very poor luck with the sharpie pens, they sort of work, even the special red ones only sort of work . They come off in the tank. (bubbling HCl/H2O2) Best I
Re: [Homebrew_PCBs] Re: direct laser PCB
2010-04-28 by Mark Lerman
I just posted a board with 3 mil traces. Using a laminator after setting the toner in the oven make a BIG difference! Mark
Re: direct laser PCB
2010-04-28 by studleylee
Also I run stuff over the drum all the time. If you can run card stock through a machine, you can run the 8mil SS PCB stock( that I do ) also. I do put Kapton
Re: direct laser PCB
2010-04-28 by Lee Studley
Sorry, but it bugs me when people jump in and say it won t work, or sorry to rain on your parade Ok, prove to me it *** WON T*** work. Have you tried it and
Re: direct laser PCB
2010-04-28 by rlspell2000
I was just going to ask about this. I use HP P1006 toner. I bought a good laminator, Fellows SPL 125, two heated rollers, two pressure rollers, rated for stuff
Re: [Homebrew_PCBs] Re: direct laser PCB
2010-04-28 by Andrew Villeneuve
... Thanks for sharing - this is impressive work. [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Re: direct laser PCB
2010-04-28 by Mark Lerman
Some more scans Mark
Re: [Homebrew_PCBs] Resist ink pens
2010-04-28 by Dave Bobb
Yes, the ones we use at work are red label black sharpies. Ore specifically, industrial acid resistant. It takes forever to scrub these off with 91%
Re: [Homebrew_PCBs] Re: direct laser PCB
2010-04-28 by DJ Delorie
The trick with TT is to find a temperature that is hot enough to make the toner plastic and sticky, but not hot enough to make it liquid. If it s too cool, it
RE: [Homebrew_PCBs] Resist ink pens
2010-04-28 by Roger Blair
I am doing double sided etching of Brass, Beryllium Copper, and Phosphor Bronze to make small parts, and I find that when using a Sharpie or Staedtler, a
Re: [Homebrew_PCBs] Resist ink pens
2010-04-28 by Andrew Villeneuve
... What particular Staedtler pens did you use as resist-ink? -Andrew [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Resist ink pens
2010-04-28 by Leon Heller
... Staedtler makes very good ones. I used to use them. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] Re: direct laser PCB
2010-04-28 by Mark Lerman
Craig, That s a good question. I m having trouble with the fusing process. When I heat to say 350 F, the toner comes off in some areas when I etch. If I really
Re: direct laser PCB
2010-04-28 by designer_craig
Mark, I would be interested in more info on your process. Do you get much spreading of the trace width during the reflow fusing in the oven. Thanks, Craig
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Mark Lerman
Here s a link to where I will be putting scans and pictures. The first two images were just uploaded, while the last ones show some experimental results from
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Kim Vellore
I was thinking the same as everyone the charge that will conduct on the metal part of the board and have no electrostatic difference for the powder to stick to
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Mark Lerman
I ll answer some of these questions now, but followup with pictures and a detailed description when I have time. In measuring the voltage from the internal
Re: direct laser PCB
2010-04-28 by rlspell2000
Like many, when I first heard this suggested, my thought was that would be some trick! But then I kept seeing references to it being done. At this point I
Re: [Homebrew_PCBs] Resist ink pens
2010-04-28 by Kerry Wentworth
They say that WhiteOut works well, but I ve never been able to get fine enough lines with it. If it s only a couple of spots, you could try masking it off
Re: [Homebrew_PCBs] Resist ink pens
2010-04-28 by Tony Smith
... I think it s the red ones that work. Tony
Resist ink pens
2010-04-28 by andrewmv@ymail.com
I m often finding that my toner transfer boards are ALMOST usable, but have a few trace breaks that need to be touched up by hand before etching. I ve seen it
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Tony Smith
... Hey, if it work, it works. People have been screwing about with that for ages, it s the holy grail of the group. Someone was playing with aluminium foil
Re: direct laser PCB
2010-04-28 by Trevor
It really would be fantastic to read your work on this. It sounds almost too good to be true. When do you think you will manage to write up your work? I am
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Mark Lerman
I don t want a flame war here, but I ve got a board in my hand, direct from my modified laser printer, that says you are wrong. When the boards come out of my
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Tony Smith
... Won t work anyway, the copper mucks up the static charge lasers use to get the powder to stick to the drum, then transfer to the paper (or PCB here).
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Tony Smith
... Won t work anyway, the copper mucks up the static charge lasers use to get the powder to stick to the drum, then transfer to the paper (or PCB here).
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Andrew Villeneuve
Mark, I d love to here more about this when you get the process perfected! -Andrew ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Mark Lerman
A subject dear to my heart! I have spent the last six months experimenting with direct laser printing of PCBs, and I am now able to (fairly) reliably produce
RE: [Homebrew_PCBs] Re: Hybrid of Inkjet & Toner Method
2010-04-28 by Brian Turvey
Still in the learning stage with this method but from what I read, the resolution should be better! Like you I have previously been using Toner Transfer but
RE: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Brian Turvey
Hi, I don t know this printer but I doubt anything as thick as PCB would go through but even if it did the technique would not work! A Laser printer builds up
Re: [Homebrew_PCBs] Re: CuCl Tank and silicone
2010-04-28 by Stefan Trethan
Well, put your fish in CuCl and see if they don t fall apart! ST
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by David Griffith
... A lot of printers have straight paths. I m more concerned about how thick of a stock the printer can take. -- David Griffith dgriffi@cs.csubak.edu A:
Re: [Homebrew_PCBs] direct laser PCB
2010-04-28 by Alessio Sangalli
... Wow if it works it s a almost complete solution for 99bucks! bye as
direct laser PCB
2010-04-28 by rlspell2000
The Brother HL-2170W claims to have a straight through path for card stock, etc... Has anyone tried to use this to print directly on PCB blanks?
Re: Hybrid of Inkjet & Toner Method
2010-04-27 by awakephd
Does this method provide better resolution than toner transfer? Or easier to do than toner transfer? (The reason I m asking it this way is that what I am using
Re: CuCl Tank and silicone
2010-04-27 by alienrelics
Like all those fish tanks that fall apart in a few years. : ) Steve Greenfield
Re: [Homebrew_PCBs] Re: CuCl Tank and silicone
2010-04-27 by Stefan Trethan
That is very well possible, but I would have to take the chance that it will fail again in a few years. Maybe I ll try, it would be a relatively quick fix at
Re: Hybrid of Inkjet & Toner Method
2010-04-27 by Brian Turvey
Point taken Steve, My apologies, it won t happen again! Regards, Brian When your software adds a SPAM to the header, it is -your- responsibility to remove it
Re: CuCl Tank and silicone
2010-04-27 by alienrelics
Quite a few years ago, someone here gave a very good explanation of why silicone (the standard stuff) won t work with ferric chloride. Or any water in
[!! SPAM] [Homebrew_PCBs] Re: Hybrid of Inkjet & Toner Method
2010-04-27 by alienrelics
When your software adds a SPAM to the header, it is -your- responsibility to remove it before posting to the list. That goes for those replying. Remove the
Re: [Homebrew_PCBs] Re: CuCl Tank and silicone
2010-04-27 by lists
In article , ... ... I think a well polished wooden former, posibly with
Re: [Homebrew_PCBs] Re: CuCl Tank and silicone
2010-04-27 by lists
In article , ... Polyprop is pretty safe with most chemicals and widely used for laboratory
Re: [!! SPAM] [Homebrew_PCBs] Re: Hybrid of Inkjet & Toner Method
2010-04-27 by Brian Turvey
Hi, Like I said in my first posting, I m only just starting to play with this method but the attraction to me was as I understand it, special pigment based
Re: [!! SPAM] [Homebrew_PCBs] Re: Hybrid of Inkjet & Toner Method
2010-04-27 by Brian Turvey
Hi James, Thanks for your guidance, I hadn t tried etching yet because of the toner scatter! It s only a fine dusting so you may well be right that it will
Re: Hybrid of Inkjet & Toner Method
2010-04-27 by awakephd
I am unfamiliar with the hybrid method. I think I understand the procedure, at least to the extent that it has been explained in these posts ... but what
Re: [Homebrew_PCBs] Re: CuCl Tank and silicone
2010-04-26 by Stefan Trethan
Regarding fiberglass, how about this crazy idea: Find a sheet of polystyrene that has the desired inside dimensions of the tank. Double-bag it in a
Re: [Homebrew_PCBs] Re: CuCl Tank and silicone
2010-04-26 by Stefan Trethan
I kind of liked the transparency of the glass. With a strong light I could check progress without taking the board out. I ll probably be prepared to scrap that
Re: Hybrid of Inkjet & Toner Method
2010-04-26 by jamesmichaelnewton
Just etch through it. Since the fine layer isn t enough to block the etchant, it undercuts the individual grains of toner and removes the copper anyway. Or are