Homebrew PCBs

Hi,
Been trying to do some toner transfer with mixed success. Has anyone 
noticed any difference in success depending on the time between copy 
and ironing onto the board? i.e Is it better to do the copy / print and 
then iron straight away, or can it be delayed?

I usually make the copy / print at work on coated paper and then do the 
ironing home at night, or even the next night if I run out of time. 
Have read through a lot of descriptions, but never found any detail on 
this.

Thanks
Gerard

I would not think it's critical as long as you keep your print clean with no
excessive dust or other contamination. Once the toner cools (a few moments
after printing), I'd expect it to stay unchanged for a very, very long time.
I believe its ability to be remelted does not change over time either
(prolonged intensive UV exposure might affect that - I am not sure). The
paper will probably not change in the several hours time between printing
and re-melting. So, unless I am missing something obvious, I think time is
not a critical factor at all.

Vlad


On 3/14/06, gerardnz2001 <gerarda@...> wrote:
>
>  Hi,
> Been trying to do some toner transfer with mixed success. Has anyone
> noticed any difference in success depending on the time between copy
> and ironing onto the board? i.e Is it better to do the copy / print and
> then iron straight away, or can it be delayed?
>
> I usually make the copy / print at work on coated paper and then do the
> ironing home at night, or even the next night if I run out of time.
> Have read through a lot of descriptions, but never found any detail on
> this.
>
> Thanks
> Gerard
>
>
>
>
>
>
>
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--
Vlad's shop
http://www.krupin.net/serendipity/index.php?/categories/2-metalworking


[Non-text portions of this message have been removed]

--- In Homebrew_PCBs@yahoogroups.com, "gerardnz2001" <gerarda@...> 
>wrote:
>
> Hi,
> Been trying to do some toner transfer with mixed success. Has anyone 
> noticed any difference in success depending on the time between copy 
> and ironing onto the board? i.e Is it better to do the copy / print 
>and 
> then iron straight away, or can it be delayed?
> 
> I usually make the copy / print at work on coated paper and then do 
>the 
> ironing home at night, or even the next night if I run out of time. 
> Have read through a lot of descriptions, but never found any detail 
> on 
> this.
> 
> Thanks
> Gerard
>

I have no idea about paper, since I just switched to using glossy 
laser paper instead of Press'n'Peel blue, but I used to do all my 
press'n'peel at one time, and then use it for several months 
afterwards, and never noticed any difference with time. I used 
press'n'peel that had been around for nearly half a year when I got my 
laminator, and it transferred perfectly.

Gerard,

I think I mentioned that to someone not long ago, when I was sending 
him some old prints to test with. Seems like in Gootee's tutorial or 
somewhere, I saw it recommended to use "fresh" prints (or was it the 
Fresh "Prince"?).

Seriously though, I keep a whole folder full of ones I've made on my 
two different paper types, and use them to test transfers, if I'm 
dealing with a unique surface or anything. I haven't really noticed 
much change over time, and some of them are 'quite' old.

Take Care,

George

In my limitted experiences so far, I can't say the time between 
printing and transferring is important.

However, I have found that touching the toner on the paper appears to 
cause problems (I have oily skin).  I also suspect that humidity might 
have some effect on the transfer process, but have yet been able to 
verify this.

I have found that the time from transfer to soaking in water is 
important for a fast release.  I am currently using a heavy gloss 
paper.  If I let the paper/pcb cool down after transfer, then soak it, 
it takes a very long time for the paper to release from the PCB.

If, after transfer, I put everything in cool water right away, the 
paper releases very quickly by comparison.

Chris



--- In Homebrew_PCBs@yahoogroups.com, "soffee83" <soffee83@...> wrote:

>
> Gerard,
> 
> I think I mentioned that to someone not long ago, when I was sending 
> him some old prints to test with. Seems like in Gootee's tutorial or 
> somewhere, I saw it recommended to use "fresh" prints (or was it the 
> Fresh "Prince"?).
> 
> Seriously though, I keep a whole folder full of ones I've made on my 
> two different paper types, and use them to test transfers, if I'm 
> dealing with a unique surface or anything. I haven't really noticed 
> much change over time, and some of them are 'quite' old.
> 
> Take Care,
> 
> George
>

On Wed, 15 Mar 2006 13:52:50 +0100, lcdpublishing  
<lcdpublishing@...> wrote:

> I have found that the time from transfer to soaking in water is
>
> important for a fast release.  I am currently using a heavy gloss
>
> paper.  If I let the paper/pcb cool down after transfer, then soak it,
>
> it takes a very long time for the paper to release from the PCB.
>
>
> If, after transfer, I put everything in cool water right away, the
>
> paper releases very quickly by comparison.
>
>
> Chris


maybe because it is hot?
With heavy paper you can speed up the soaking if you scratch the back side  
with a wire brush or coarse sandpaper after transfer. This opens up the  
surface and the water can get in much faster. A drop of detergent helps  
also (sb. suggested dishwasher detergent works even better).

I do not think time between printing and transfer is a problem (once the  
toner is cold it doesn't change) but of course it must be kept clean and  
free of dust.

ST

thanks everyone for the advice. I will have some more tries, as I 
said I have been successful before but this time it didn't go as good.

Cheers all.

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@...> wrote:
>
> On Wed, 15 Mar 2006 13:52:50 +0100, lcdpublishing  
> <lcdpublishing@...> wrote:
> 
> > I have found that the time from transfer to soaking in water is
> >
> > important for a fast release.  I am currently using a heavy gloss
> >
> > paper.  If I let the paper/pcb cool down after transfer, then 
soak it,
> >
> > it takes a very long time for the paper to release from the PCB.
> >
> >
> > If, after transfer, I put everything in cool water right away, the
> >
> > paper releases very quickly by comparison.
> >
> >
> > Chris
> 
> 
> maybe because it is hot?
> With heavy paper you can speed up the soaking if you scratch the 
back side  
> with a wire brush or coarse sandpaper after transfer. This opens up 
the  
> surface and the water can get in much faster. A drop of detergent 
helps  
> also (sb. suggested dishwasher detergent works even better).
> 
> I do not think time between printing and transfer is a problem 
(once the  
> toner is cold it doesn't change) but of course it must be kept 
clean and  

> free of dust.
> 
> ST
>