k i tried different papers. left the trannys. will probaqbly
experiment with achieving the right temprature for trannys later.
they do seem to leave very dark traces on the pcb and come of really
easay.so if i can figure out how to use them properly it'll be
great :)
meanwhile i've been busy trying out techniques.experimenting
basically. spent all night on it yesterday. i got this really
cheap generic glossy paper for laser printers. cost me $0.03 per
sheet. i dont think it gets any cheaper than that :P the toner
sticks really well if i heat it properly.about 5-10 minutes per
board. the down side is the paper sticks to the pcb. i left it
overnight in room temp soapy water. the upper layer peeled of
rather easily, used my thumb. the last layer was a bit stubborn but
i got most of it off with a medium toothbrush. made 10 boards about
40% came out absolutely perfect. with some a lil toner flaked of
cause it didnt stick.more heat should solve that. one thing that
got me bothered was some really thin traces merged. i think i can
use a sharp blade to separate the traces.is that rite?
also, if i leave the boards to dry n then etch them tomorrow would
that make any difference? as in would the oxidization of naked
copper cause any problems in the etching process?or am i just
worrying to much? :P read somewhere to keep them in water untill i
need them for etching. somehow that doesnt seem rite.
and thanks for all the help guys!!!!u've all been great!!!! :D
--- In
Homebrew_PCBs@yahoogroups.com, "chroniclz" <chroniclz@...>
wrote:
>
> hi,
> hope some1 can help me with this. i've been trying the old toner
> transfer method. i've tried it with a couple of transparencies.
i
> think 1 from 3m one from a generic producer and some other.
couldnt
> find the hp transparency. some even had a rough surface on one
side
> like i read in some post. i tried with photocopied transparencies
and
> with laser printed ones. the printed ones were much sharper
though.
>
> what happens is when i iron the transparency on the board it
shrinks
> slightly and the design gets smudged. i i mean really smudged at
some
> places. i tried it with epson glossy paper too. same thing
happened.
> when i ironed it the paper shrunk mostly from the middle section
and
> the design got smudged beyond recognition.
>
> i'm fairly new to this. and i need serious help. what am i doing
> wrong?
>