Re: Positive resist
2003-07-06 by Ben H. Lanmon
Doing some Google Searching and found some pos. photo resist. Injectoral http://www.injectorall.com/photoresist.htm Ben ... worth ... good ... but ... in ...
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Re: [Homebrew_PCBs] Re: the naked truth about Laser Jet, warts and all !
2003-07-06 by Russell Shaw
... I was trying to get the normal laser printer toner-transfer system to work for normal 10cm x 10cm PCBs. I was using TTS paper that has a gelatine coating
Re: [Homebrew_PCBs] Positive resist
2003-07-06 by Russell Shaw
... http://www.google.com.au/search?hl=en&ie=UTF-8&oe=UTF-8&q=prp+photoresist&btnG=Google+Search&meta=
Re: [Homebrew_PCBs] Re: Positive resist
2003-07-05 by Markus Zingg
... www.schuricht.de or www.distrelec.com do have this product. No idea though if they deliver to the US. Worth a try though since they also have an online
Re: [Homebrew_PCBs] Re: Positive resist
2003-07-05 by Hans Wedemeyer
The spray you need is named POSITIVE 20 made by KONTAKT CHEMIE has Art. No. 20.820.6.04.25.02 I got my last can from the UK, but can t find the source right
Re: Positive resist
2003-07-05 by Ben
The only one that makes it that I know of is GC Electronics. Cat.# 22-0074-0000 Now I am not sure about a stocking dist., so far the ones I looked up don t
Re: [Homebrew_PCBs] Re: the naked truth about Laser Jet, warts and all !
2003-07-05 by Hans Wedemeyer
Small correction here.... You quote me Hans Wedemeyer wrote: Not me... I think someone wrote :- ... slabs ... Best regards Hans W ... [Non-text
Re: [Homebrew_PCBs] Positive resist
2003-07-05 by Neil
I recently asked this as well. From the archives, the only place I could find in the US is www.thinktink.com for a dry-film laminated method. I m still also
Positive resist
2003-07-05 by jackafaz
Hi, Would someone please let me know where I can purchase Positive Photo Resist in a spray can, mail order, in the US? I have done a bunch of searches and have
Re: the naked truth about Laser Jet, warts and all !
2003-07-05 by wheedal99
I m not sure what you mean by a whole board . Almost everything I do is under 6 x6 . Anything larger, or more complicated I send out. Ordering boards is
Re: the naked truth about Laser Jet, warts and all!
2003-07-05 by ghidera2000
I have a dirt cheap laser, the Samsung ML-1210. It makes artwork that is pretty well perfect. No pinholes or dropouts and large black areas are nice solid
Re: [Homebrew_PCBs] Re: the naked truth about Laser Jet, warts and all!
2003-07-05 by Russell Shaw
... The only convincing i needed was that someone had a proven example. It was hardly misleading information until a concrete example was done.
Re: the naked truth about Laser Jet, warts and all!
2003-07-04 by Steve
... I m convinced. It looks to me like good results depend on experience, quality control, and using the right mix. My laser printer did not work well for
Re: [Homebrew_PCBs] Re: the naked truth about Laser Jet, warts and all!
2003-07-04 by Hans Wedemeyer
Mike, I agree with you 100% that s why I displayed some practical everyday proven results. And yes you never did tell Russell to shut up. Russell said he would
Re: [Homebrew_PCBs] Re: the naked truth about Laser Jet, warts and all!
2003-07-04 by Mike Putnam
I have no problem with a serious discussion on a method of making transparencies, but when someone says something can t be done and other people say it can
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all!
2003-07-04 by Hans Wedemeyer
Russel, OK I said no more, but as you are asking serious questions here are the ... ZERO shorts, I got two short when I tried to put (silly idea) the 2.5mil
Re: the naked truth about Laser Jet, warts and all!
2003-07-04 by Steve
Well said. Keep it friendly, or at least not too hostile. ; ) I m very interested all this. Steve, your friendly neighborhood moderatorman ... subject.....
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all!
2003-07-04 by Stefan Trethan
hey guys... this is a serious discussion about which method/printer is best. ok, serious but..... i see no reason for shut up posts or asking for closing
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all!
2003-07-04 by Russell Shaw
... (a lexmark laser 4039 R+)
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all!
2003-07-04 by Russell Shaw
... I said i d shut up about inkjets being the only viable alternative to doing fine work. ... Why hasn t anyone ever said how fine they can go with a laser.
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all!
2003-07-04 by Mike Putnam
... Didn t you say you would shut up on this subject in an earlier post? This has turned into a printer wars group... What say you Steve? Isn t it time to
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-04 by Russell Shaw
... The US list has similar prices.
Re: [Homebrew_PCBs] Re: the naked truth about Laser Jet, warts and all !
2003-07-04 by Russell Shaw
... Try doing a whole board. I ve never got all the pads or tracks to stick, and i even made special heated press from 5/8 aluminium slabs to get even
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all!
2003-07-04 by Russell Shaw
... I assume you mean very few if any shorts between pads? ... I get sharper results by using spray-on PRP positive resist because the plastic coating sheet on
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Mike Putnam
... been ... PCB ... http://search.ebay.com.au/search/search.dll?MfcISAPICommand=GetResult&ht=1&c giurl=http%3A%2F%2Fcgi.ebay.com.au%2Fws%2F ...
Re:Toner transfer --was the naked truth about Laser Jet, warts and all !
2003-07-03 by wheedal99
Well, I meant to say a few 100 pin tqfps, but the results are the same... I use a cheap laminator to fuse the toner and just soak the magazine backing off
Re: the naked truth about Laser Jet, warts and all !
2003-07-03 by rolanyang
For small runs, toner transfer is definitely the way to go. What is your strategy for separating the paper from the PCB after you ve ironed? It looks very
Re: [Homebrew_PCBs] Re: the naked truth about Laser Jet, warts and all !
2003-07-03 by Hans Wedemeyer
Very nice.... I m impressed... bu then Laser can t do this... right ? ... Hans W ... [Non-text portions of this message have been removed]
Re: the naked truth about Laser Jet, warts and all !
2003-07-03 by wheedal99
I ve been doing 100 a few tqfp s that work pretty well. I ve just started using toner transfer for the last little while; I m sold on it. Pictures
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all!
2003-07-03 by Hans Wedemeyer
Russell, Well I did a QFP144 which has 0.25mm pads with 0.2 mm spacing between the pads, that s the tightest I could find in EAGLE and placed two of them
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Markus Zingg
... Tracing paper is sold in any paper shop. As you know, I m also from europe (Switzerland) and as said, every shop should have it. I haven t found big
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Stefan Trethan
i have tried with some different transparencys. but not with tracing paper - didn t see it here anywhere. the problem is i can t go out and buy appollo
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Markus Zingg
... No surprize with most transparencies. Have you ever tried it with regular tracing paper? Then, the LjIII series of printers were only 300DPI, so this may
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Stefan Trethan
i believe that it is possible. i don t doubt that. but with my old laser jet IIID and with a bad cheap toner and with poor cheap ohp transparencys i can t to
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Markus Zingg
... Russel, I just lately experimented a lot (well, was forced to do so due to the transition to through hole plated boards). My findings were that the printer
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Russell Shaw
Mike Putnam wrote: ... Enter: epson stylus into the ebay search box. For ebay.com.au, the first hit is a stylus C20SX for $5 with 3 hours to go.
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Russell Shaw
... Show me a footprint of 0.5mm pitch 256 pin QFP done on a laser without most of the pads shorting and i ll be happy. ... The blacker the film, the less
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Mike Putnam
... i ll ... double-sided ... perfect ... connectors ... and ... stylus colour) ... Russell, Where are you finding these $5 and give away printers on E-Bay? I
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Hans Wedemeyer
Mike, That s the reason I posted this today.... I m also sick of the same old crap about lasjer jet not being any good... it really is misinformation... The
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Adam Seychell
... I ve just got a cheapy Cannon S330 (600 x 600 DPI black) that I will test soon for PCB photomasks. It has AUD$9 black ink carts. It would be interesting to
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Russell Shaw
... I spent 2 years looking for a cheap way to get good consistant print-outs. Lasers never worked for finer stuff. If you can say definitely that you can do
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Mike Putnam
... The printer is not as big an issue as you think. I have done boards with FPGA on them in the past with a laser printer. All of my boards have been made
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-03 by Russell Shaw
... I d just like to know if anyone has done fine-pitch 256 pin fpga or cpu boards with a laser...
Re: [Homebrew_PCBs] the naked truth about Laser Jet, warts and all !
2003-07-02 by Hans Wedemeyer
Today I needed a board.... NOW...... so I made one. Wish I had through hole plating, but that would only have added some more time, I hand wired the via s by
Re: [Homebrew_PCBs] H2O2 and ferric chloride
2003-07-02 by Stefan Trethan
so it seems... h2o2 is a wonderful oxydizer... just make sure not to generate lots of clorine gas when using with hcl/fe3cl. you will smell this. then it is
H2O2 and ferric chloride
2003-07-02 by Leon Heller
My ferric chloride etchant was obviously exhausted, when I was etching a couple of small boards this afternoon, so I sloshed in some H2O2, reasoning that it
H2O2 and ferric chloride
2003-07-02 by Leon Heller
My ferric chloride etchant was obviously exhausted, when I was etching a couple of small boards this afternoon, so I sloshed in some H2O2, reasoning that it
Re: [Homebrew_PCBs] Macro photography
2003-07-02 by Stefan Trethan
thanks... good to know that... experiment some more, i got unexpected good results with the microscopescope/webcam setup. but the damn cam has a too poor image
Re: [Homebrew_PCBs] Macro photography
2003-07-02 by Leon Heller
... From: Stefan Trethan To: Sent: Wednesday, July 02, 2003 2:37 PM Subject: Re: [Homebrew_PCBs]
Re: [Homebrew_PCBs] Macro photography
2003-07-02 by Stefan Trethan
looks funny.... a lot of tunnel view i achieved good results with pointing my webcam into the microscope. i used it very close to the eyepiece and adjusted