Re: [Homebrew_PCBs] Rescuing a weak cupric chloride etch bath
2013-11-09 by Stefan Trethan
Do you have access to higher concentration H2O2? If so you can leave the SG low, and let it build during regular etching. If you don t have concentrated H2O2
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RE: Rescuing a weak cupric chloride etch bath
2013-11-09 by <twgray2007@...>
I had exactly the same situation a couple months ago with the exception that I had left the solution in a gallon milk jug for about 2 years. Anyway, the way I
Rescuing a weak cupric chloride etch bath
2013-11-09 by Philip Pemberton
Hi there, I ve finally found some time to check the acid cupric chloride etch solution I started preparing back in July. What I have is about 750ml consisting
RE: Printer scale accuracy and blackness.
2013-11-09 by <arvidj@...>
... Assuming you want to buy one, any particular Epson or are all Epson s up to the task? ... Phaser solid ink printer has Excellent opaqueness Excellent scale
Re: Re: [Homebrew_PCBs] tracing paper, laser and photoresist
2013-11-09 by Jan Kok
A couple of thoughts: 1. Maybe the toner darkener could be sprayed onto copper clad after toner has been transferred to the copper clad. That might work as a
Re: Pinhole question
2013-11-08 by tda7000
I think it is a bit of both. I have had a few pinholes on large fill areas when doing toner transfer before, I would touch them up with a Dalo pen and it was
Re: [Homebrew_PCBs] Pinhole question
2013-11-08 by H. Carl Ott
... Are your traces wide or narrow? Do a test print on normal paper with largish filled areas. Hold it up and view it with a light source behind the paper. Is
Re: [Homebrew_PCBs] Pinhole question
2013-11-08 by Norm
... Paper is sort of vellum in texture, yellow in color - on the paper side. The working side is sort of glossy/waxy, orange in color. When the toner
Re: [Homebrew_PCBs] Pinhole question
2013-11-08 by Jan Kok
... I love the English(??) on that web page! :-) Can you describe that paper, i.e. what kind of coating etc.? On to the problem: I m using an HP printer with
RE: Re: [Homebrew_PCBs] tracing paper, laser and photoresist
2013-11-08 by <andrewm1973@...>
... I have some of the toner darkening stuff. It is all solvent as it leaves no residue after spraying. It definitly works at darkening ground planes etc.
RE: tracing paper, laser and photoresist
2013-11-08 by <twgray2007@...>
You might try Krylon Crystal Clear Acrylic Coating 1303. It claims to be UV invisable, and it does darken the print up, but, I m not sure it is worth the
Lets compare results, post some photos
2013-11-08 by ctech
[Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] tracing paper, laser and photoresist
2013-11-08 by James
I have read that Toner Darkener is basically a matt clear acrylic, or even hair spray, from this thread...
tracing paper, laser and photoresist
2013-11-08 by Kerry Koppert
I have been using tracing paper (Vellum?) and a laser printer to produce transparencies for photoresist. I have some good results, but the large dark areas
Re: [Homebrew_PCBs] Positive or Negative Artwork Decals
2013-11-07 by Bill Maxwell
3M Scotchcal or some similar sounding name? It was a 3M product, I m sure. Bill ... I use BullGuard Spamfilter to keep my inbox clean. It is completely free:
Pinhole question
2013-11-07 by <w6nim@...>
Just getting started with the toner transfer method. I found what I consider to be a great transfer paper:
RE: Double or triple printing to increase ink density/opaqueness.
2013-11-07 by <beefyzee@...>
Thanks very much guys. Cunningfellow, the more I Google and read, the more I hear of people having issues with the lack of opacity from laser printers, and
Positive or Negative Artwork Decals
2013-11-07 by Brian Symons
I know this isn t PCBs but does anyone have any experience with the adhesive film that you expose to a positive or negative artwork & then use a chemicals to
RE: Re: [Homebrew_PCBs] Double or triple printing to increase ink density/opaqueness.
2013-11-06 by <andrewm1973@...>
... For a laser printer it is only the large black areas that have opacity problems and need over printing. Don t double print thin traces. Shrink ground/power
Re: [Homebrew_PCBs] Double or triple printing to increase ink density/opaqueness.
2013-11-06 by kabowers@...
... A bit of ancient history on HP grit wheel pen plotters. There was an article in the HP Journal about paper positioning. IIRC they stated that the drive
RE: [Homebrew_PCBs] Double or triple printing to increase ink density/opaqueness.
2013-11-06 by Boman33
Multiple printing works well to get a denser artwork but you trade off resolution and regardless, paper alignment get extremely critical. Bertho From:
Double or triple printing to increase ink density/opaqueness.
2013-11-06 by <beefyzee@...>
Has anyone ever simply refed an already printed photo positive transparency to print a second and even a third time, in order to double/triple the density of
Re: Water transfer paper
2013-11-06 by AlienRelics
... Yes, look in Photos/Dissolvo Paper Experiment and Photos/TT n Water Soluble Paper for a couple of tests. Unfortunately, the Photos section is NOT ordered
Water transfer paper
2013-11-06 by Corey Minion
Anyone tried this stuff for creating boards? I just got a pack of sheets for my kids party, and have leftovers. Laser printable, water soluble.
Re: [Homebrew_PCBs] UV Strip LEDs
2013-11-05 by James
Replying to myself ... Huh, what do you know, I looked on ebay today and found a bunch, I m sure I ve looked before, maybe I just thought they were purple or
Re: [Homebrew_PCBs] Mitch Davis: Hackvana.com
2013-11-05 by Mitch Davis
Hi Bertho, ... I drafted it but forgot to press send. Very sorry about that. I ll do that now. My regards, Mitch.
RE: Guide for inkjet print settings for opaque positives
2013-11-04 by <beefyzee@...>
Steve, thanks so much for that info, definintely not the type of info you easilly find. I ve made a word file from it for the archives. Now I know exactly what
Re: Using vinyl for toner transfer?
2013-11-04 by AlienRelics
That s fantastic! I ve linked to this message in Links/Toner_Transfer to make it simpler to find in the future. Steve Greenfield AE7HD
Re: Guide for inkjet print settings for opaque positives
2013-11-04 by AlienRelics
Good link, I ve added it to the Links/Photoresist_Etching section here... hint, hint. Steve Greenfield AE7HD
Re: Guide for inkjet print settings for opaque positives
2013-11-04 by AlienRelics
Velum is not velum is not velum. Same with ink. There are plain velum papers made for printing, and special velums made specifically for photoresist for
Re: Guide for inkjet print settings for opaque positives
2013-11-04 by AlienRelics
Please trim. That message was really ridiculously long. Black isn t necessarily the right color to block UV. And ink is not ink is not ink. I wrote this a few
RE: [Homebrew_PCBs] RE: RE: RE: RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by Boman33
For your feeding problems, place a strip of white tape at the leading edge of the transparency. That will activate the opto sensors so it will feed normally.
RE: RE: RE: RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by <beefyzee@...>
Ah so that s what it is. Good luck with your build. OK, after throwing all the toys out of the pram, and spitting the dummy, I jumped out the pram, picked the
Re: [Homebrew_PCBs] RE: RE: RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by Russell Shaw
... I ve never had success with the sandpapery overhead projector transparencies. The ink doesn t dry (i only tried dye ink though). If you use the gelatine
Re: [Homebrew_PCBs] RE: RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by James
One advantage of using UV leds is they have a specific (and usually narrow) field of view, so it s trivial to work out the actual minimum height needed given
RE: RE: RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by <andrewm1973@...>
My friend has an epson and its inks just pool and don t dry on the gelatine coated transperancies I use in my canon printer. I am going to buy a box of the
RE: RE: RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by <beefyzee@...>
More disaster. Taping a peice of plain paper to the transparency worked to fool the printer but the opaqueness of the black print was atrocious. Edge quality
RE: RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by <beefyzee@...>
Cunningfellow, Interesting what you said about the uneven light distribution in your UV box. I ve just pulled apart a nail varnish curer and am going to put
Mitch Davis: Hackvana.com
2013-11-04 by Boman33
Mitch, Are you still in the PCB business? I sent in a request to Hackvana.com on Wednesday and I have not gotten any response. Take Care, Bertho
RE: RE: Guide for inkjet print settings for opaque positives
2013-11-04 by <andrewm1973@...>
Beefy, Just getting a box of 100 of the pigment compatible ones to try in an epson printer. My canon works fine with the gelatine ones but I want to see how
RE: Guide for inkjet print settings for opaque positives
2013-11-04 by <beefyzee@...>
Hi Cunningfellow, I m down in Melbourne as luck would have it. What are you buying. I ve just been out to a little business called Kalex Electronics (on Ebay
RE: Using vinyl for toner transfer?
2013-11-04 by <twgray2007@...>
For all the comments, insight, and help this group has been, I feel compelled to share my sucess using the toner transfer pcb method. After testing all the
RE: RE: Guide for inkjet print settings for opaque positives
2013-11-03 by <andrewm1973@...>
beefy, Where in OZ are you? I am going to be ordering some more soon to Brissy ... Thanks again everyone, that AdvancedScreenPrinting link is great, I wonder
RE: Guide for inkjet print settings for opaque positives
2013-11-03 by <beefyzee@...>
Thanks again everyone, that AdvancedScreenPrinting link is great, I wonder if they ship to Australia. Another tip I picked up although not exactly a DIY method
RE: Printer scale accuracy and blackness.
2013-11-03 by <andrewm1973@...>
Phaser solid ink printer has Excellent opaqueness Excellent scale accuracy Average resolution My canon inkjet wins over the phaser for doing photo-tools.
RE: RE: Guide for inkjet print settings for opaque positives
2013-11-02 by <andrewm1973@...>
Dye inks can use gelatine coat trannies Pigment inks need the micro porous ones http://advancedscreenprintsupply.com/store/screen_printing_inkjet_film.htm
Printer scale accuracy and blackness.
2013-11-02 by Terry Mickelson
The Samsung CLP-325 set to 100% scale prints at 1:1 while an Epson Workforce 500 would print accurately at 100.5% if such a setting were available. I need
Re: [Homebrew_PCBs] RE: Guide for inkjet print settings for opaque positives
2013-11-02 by Leon Heller
I get excellent results with an HP Deskjet 5940 printer, using Mega Electronics Premium film. Leon -- Leon Heller G1HSM
Re: [Homebrew_PCBs] RE: Guide for inkjet print settings for opaque positives
2013-11-02 by Russell Shaw
... Canon PIXMA printers often have dye colour, dye black, *and* a pigment black. The pigment black seems to be for text printing.
RE: Guide for inkjet print settings for opaque positives
2013-11-02 by <fred27murphy@...>
I recently got some great results with my Canon MG5250 on some old inject transparencies I got from eBay. The magic paper selection setting for me was T-shirt