hi picsters, i just used normal a4 paper & printed the pcb circuit on it. the printer used was my NEC silentwriter LC 890. i used a normal flat clothes iron. the one i use to iron my shirts with ! had no problems except for the temp.as stated , how long to leave it applied to the paper for in order for the toner to adhere t o the board. put the board with paper together in water & worked off the paper.CAREFULLY!!!! thinner tracks were SOMETIMES a bit more of a problem. sometimes they didn't quite take all the way. i just used a needle ( that i sew my buttons on with when they fall or get ripped off) & nail polish. to clean up the tracks i repaired , i used a razor blade ! BTW, for a fast proto pcb , nailpolish IS EXCELLENT !! i've don it many times. remove with acetone or steel wool once etched presto. cheap'n nas\ty. i read a top thread from this list a while ago about making use of what you have cost reductions etc . i think it was paul webster & co who added input. (sorry if i'm wrong , paul , just going from memory) glen ****************** D. F. Welch wrote: > For those who like to try new things. > > I tried the toner release paper mentioned by Roger > and although it worked reasonably well after I > got the ironing temperature and technique down I > was a bit bothered by the cost. > > Recently I tried the backing sheet for Avery > Laser Printer Labels and guess what ... it > worked, IMHO, as well as the blue stuff and > was much cheaper. > > At 09:00 AM 5/20/99 -0400, you wrote: > >>>> > > X-Mozilla-Status2: 00000000 > Message-ID: > Date: Wed, 19 May 1999 10:15:15 -0400 > From: Roger Morella > X-Mailer: Mozilla 4.51 [en] (Win98; I) > X-Accept-Language: en > MIME-Version: 1.0 > To: Lawrence Lile > Subject: [OT] Best PC Board Etching Resist Method (was: hp7475 PC board p lotting) > References: > Content-Type: multipart/alternative; > boundary="------------BA21757E20F19C42E4C043A0" > > If you have a laser printer and want a quick and easy etching resist meth od, contact Techniks, Inc. in Ringoes, NJ. www.techniks.com (9 08-788-8249) > > We have been using their PnP-Blue Pres and Peal iron on printed circuit b oard transfer film for a couple of years and have have found it to be the best m ethod so far (and we have tried a lot of methods ) This is an iron on method whe re you print the board to their transfer film and iron the film onto the surface of the PC board using an ordinary household iron (if your wife won't let you us e 'her' iron you can buy one at the local thrift store for about $5). The result is 2 layers of resist. The film layer and the toner layer. The combination prov ides a very high degree of resist which will work very well with fine traces and small holes. The hardest part of the whole process is cleaning the toner off th e board after it has been etched (which confirms the integrity of the toner as a n etchant resist). > > They can be reached at www.techniks.com or call them at 908-788-8249 > > The price we paid was $30 for 20 sheets of 8 1/2 by 11 An excellent deal considering the time and frustration we have saved. > > Roger Morella > > <<<< > > Daniel F. Welch > > Director > Research and Development > American Scientific Associates > Email: amersci@flash.net