I have a bit of collected advice at http://techref.massmind.org/pcbetch I'd love to know if I'm missing any. --- James Newton mailto:jamesnewton@geocities.com 1-619-652-0593 http://techref.massmind.org NEW! FINALLY A REAL NAME! Members can add private/public comments/pages ($0 TANSTAAFL web hosting) -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Javier Grijalba Sent: Monday, March 13, 2000 01:54 To: PICLIST@MITVMA.MIT.EDU Subject: [OT] building PCB with photo sensitive boards Hi Any advice for building photo sensitive PCB4s ?? Time of exposure to the sun?? Whats the finest pad possible?? What about 0.2 mm?? Bye Javier ----- Original Message ----- From: Andrew T Kelley To: Sent: Saturday, March 11, 2000 3:31 PM Subject: Re: [OT] need PCB boards and developer [OT] > On Sat, 11 Mar 2000 18:16:21 -0000 Alan Pearce > writes: > > >Try http://www.digikey.com and they have 'toner transfer system' > > paper. ( > > >I have never used it but it sounds good! It's 5.89 or so for 5 > > sheets. ) > > > > >You take a sheet, print on it with a laser printer or copier then > > you > > >either iron it on or wet it.. i'm not sure which. > > > > I believe it needs heat to transfer it to the PCB laminate. > > Electronics > > Australia, an electronics magazine, reviewed such stuff about 5 > > years ago, and > > claimed that it did what it was supposed to. It is apparently > > possible to do it > > with normal paper. > > Ahhh but did ANYONE Ever TRY IT? > > > The process occurs because printer toner contains plastic which gets > > melted in > > the heat rollers of the printer which causes the now slightly molten > > plastic to > > be absorbed by the paper. The toner transfer paper is designed to > > release the > > toner when reheated so that it sticks to the laminate instead. > > > > The impression I got was that it needs to be pretty hot to release > > the toner > > from the paper, but a household iron as used on clothes may be hot > > enough. > > Andrew > ________________________________________________________________ > YOU'RE PAYING TOO MUCH FOR THE INTERNET! > Juno now offers FREE Internet Access! > Try it today - there's no risk! For your FREE software, visit: > http://dl.www.juno.com/get/tagj.