Homebrew PCBs

On 08/03/2010 04:07 AM, coronasensei wrote:

> stuff left you should give it another go. The main things you need to
> do to make transfer work is get the copper very very clean. Scrub
> with one of the green kitchen scourers (don't use it in kitchen
> afterwards!) to remove all the oxide and give the surface some slight
> texture for the toner to grab to, then clean it with turps. Turps

I disagree with this. I was doing like you said, but I think it was at 
least just unnecessary, and in some cases I suspect it made 
solderability somewhat worse. Just use a shop cloth and acetone or heavy 
duty flux remover to clean the copper clad; at least, it works for me :)

With my printer (Richo 2000) and my laminator (an unmodified one I 
bought off the internet) I have virtually perfect results; smallest I 
used so far is 10mil traces.


> blowing it with a heat gun (this was with paper, which takes a little
> more effort to get the heat right though). I passed through laminator
> multiple times (trial and error). Then the for paper it's soak in

I normally pass it 8-10 times, with a "the more, the marrier" approach. 
I suspect only 3 or 4 times would be enough...

Maybe I ended up having a very good printer/laminator combo?

bye
as