Yes, the root of the problem is the "paper" you are using. I have just recently found the best medium for toner transfer. It is Oracal 651 which is a vinyl sticker. It is available on ebay at a very reasonable price http://www.ebay.com/itm/12-x12-Gloss-Craft-Adhesive-Vinyl-Oracal-651-Silhouette-28-Colors-SAME-DAY-SHIP-/380452333884?ssPageName=ADME:L:OC:CA:3160 There is a YouTube "How to use" here http://www.youtube.com/watch?v=FtmJdCBjwXY Every bit of the toner from your laser printer gets transferred to the copper foil using this stuff! Jim --- In Homebrew_PCBs@yahoogroups.com, n0tt1@... wrote: > > I think the root of the problem is the paper you are using. > The best paper I've used so far for laser transfer is "regular" > ink jet paper. I.e., not heavy "photo" paper or the glossy stuff > either. Try to get a few sheets from a friend and try it out rather > than spending $$ on a new package. > > Charlie > > On Mon, 15 Apr 2013 07:18:52 +0100 Dave Wade <dave.g4ugm@...> > writes: > > On Apr 15, 2013 5:30 AM, "william casselberry" <wcasse@...> > > wrote: > > > > > > I�m a relative noob trying to prototype a computer keyboard > > project where > > my > > > PCBs are about 12�x6�. They are single sided and have only 14 > > surface > > mount components but > > > these are really small. I would appreciate any advice from you > > guys with > > > experience with big boards and small components. > > > > > > I have two substrates I am working with; .008" FR4 and > > > Pyralux. I am trying to do toner transfer using Office Depot > > �glossy text� > > > paper, but that paper shrinks about 1% when heated, so the toner > > is not > > > sticking properly in some spots and the Pyralux is actually > > wrinkling in > > the > > > laminator due to paper shrink. > > > > > > More details about my project here: > > > https://geekhack.org/index.php?topic=40111 > > > > > > Thanks > > > > > I can't see the geekhack page, but if they are small smd devices > > with few > > pins I would make carriers to allow them to go in normal IC > > sockets. > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > ------------------------------------ > > > > > > Be sure to visit the group home and check for new Links, Files, > > and > > Photos: > > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links > > > > > > > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > ------------------------------------ > > > > Be sure to visit the group home and check for new Links, Files, and > > Photos: > > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links > > > > > > > > >
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Re: Need advice for large PCB and sub-mini SMDs
2013-04-15 by ve7su
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