Greetings from the UK. I joined this group a week or so ago. So I am new to all this. I have just used the toner method and it seems to work fine for me. I am happy. 1] I used one of those abrasive PCB cleaner blocks to get a shiny board, making sure not to touch it with greasy fingers afterwards. Deburring the edges is easy, you just whack them down the edge of a metal table to fold the copper back down. Use a file if you must. 2] Printed my images using an Apple Laserwriter 4/600. I found an ancient Mac OS9 version of the laserwriter utility that lets a person set the default print density on the printer. The toner cartridge was an exchange refill, so nothing special there. 3] Used the wife's domestic iron on a hot setting. Once the paper had started to stick down I could happily move the iron around to give an even heat. I think the art here is to maintain intimate connection of paper and PCB without using undue pressure on the iron to squidge the pads and tracks. I didn't time it or anything. After a few trial boards it worked fine for me. I Tried several papers I had around the house. I used a paper often used for digital prints called 'Mellotex'. This is made by Tullis Russel. Free UK samples 0800 74 74 77. This seems to work OK, I get a good dense black but it is a bit hairy. After a good soak in water the hairs mostly come off. I found the black toner was so well bonded on I could scrub the boards. I also tried a paper called Detec, also used a lot by digital print houses, but that was no good at all. The wife's silicon baking parchment worked wonderfully on the transfer side of things, but didn't accept a very dense coating of toner to start with, so I abandoned it. I looked up that Staples glossy paper, but the UK order codes don't seem to match the US ones. Can anyone identify the paper I should try for me please? <http://www.staples.co.uk/ENG/Catalog/cat_class.asp? CatIds=1101,1287&name=UK%5FCL%5FPhoto+Paper> 4] Did a quick very minor touch-up with a Staedtler Lumocolor pen. 318 series. I read that people insist on the red pen, but I used black and it works just fine. This I shall have to hide so that my wife doesn't steal it for writing on freezer bags in the kitchen. 5] Into a ferric chloride bath 6] Erm, not sure my wife realises her nail varnish remover has disappeared yet. 7] Drilled the holes with a cheap but very solid cast metal pillar drill that takes a standard drill. This cost 5 GBP, about 8.6 US bucks, from LIDL, a European chain store. I've been drilling .5mm holes happily on this. Excellent. Job done. A cheap answer to my needs. I was going to use Press'n'Peel but I won't bother with that expense unless I want to get down to really fine work. Is P'n'P really that great? Whoop John
Message
DIY PCBs working for me
2005-11-17 by whoop@blueyonder.co.uk
Attachments
- No local attachments were found for this message.