Look on my ham website for some ideas about iron-on toner transfer. I have had good results. http://www.al-williams.com/wd5gnr Regards, Al Williams AWC *Solderless Stamp (and PIC-Stic) prototypes at http://www.al-williams.com/awce.htm -----Original Message----- From: Sean Breheny To: PICLIST@MITVMA.MIT.EDU Date: Wednesday, January 28, 1998 10:42 AM Subject: Re: New PCB etching technique... >Hello all, > >I have a question regarding this whole thread: I have tried using the >special paper that you print onto using a laser printer and then "iron" on >to the board, and I have had very little luck (this is NOT the copper foil >paper, which I have never seen). What I did was to print my patter using a >laser printer. I baked the paper slightly in an oven (I also tried not >doing this). Then I thorouly cleaned and even lightly sanded the board, >placed the paper on it, and then applied heat and pressure. To apply the >heat and pressure I tried both an iron and a commercial t-shirt press on >max. heat and on medium heat. I then within 20 seconds placed the >board/paper combination into water until the paper separated. I ALWAYS got >an unsatisfactory result, some of the toner would fall off in the water and >I would be left with a spotty board. I even called the manufacturer and >tried his suggestions. Nothing worked. I even tried several different >batches of paper. To no avail. Any idea what I was doing wrong? > >Thanks, > >Sean > > >At 11:04 AM 1/28/98 +0000, you wrote: >>Is there a web site where I can purchase necessary components to try >>the copper foil technique on my own? >>TIA >>AY >> >>> Actually, the copper foil technique was developed precisely because it >>> is easier than the heat transfer method, and produces vastly superior >>> results. It is very dificult for most people to get consistent >>> results with the TEC sheets (and similar products), and the very fact >>> that the toner is transferred twice limits the minimum reliable trace >>> width. This new method promises high quality prototype PCB's with a >>> minimum of fuss. >>> >>> >>> CIAO - Martin. >> >+--------------------------------+ >| Sean Breheny | >| Amateur Radio Callsign: KA3YXM | >| Electrical Engineering Student | >+--------------------------------+ >http://www.people.cornell.edu/pages/shb7 >mailto:shb7@cornell.edu >Phone(USA): (607) 253-0315 >