Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Lez <lez.briddon@...> wrote:
>
> right, I will try some from the artist supply in town, got to be 
worth a go!
> 
> Then its got to be worth a try on cheaper paper, ie coated 
inkjet/copier etc
> 
> You mentioned with a rubber squegee, I wonder if a rubber roller, like
> an ink roller for old printing presses would give a smooth uniform
> thin coat, car windscreen wiper rubber?....
> 
> Seems if the ingredients are right, paper, glue,toner,heat, we now
> just have to come up with a foolproof application for everyone that
> people can get the bits for.
> 
> 

Yes, cheaper paper can surely be used, I think its an advantage if the 
paper is more like "standard copy paper" since the water more willingly 
will soak it through. The glue makes the smooth surface. But, on the 
other hand, The glue will moist the paper more, making wrinkles.

A roller... yes why not?  Initially I used a soft flat brush, quickly 
paint the sheet after taped the sheet to the table. after drying (15 
minutes)I wetted a lint-free rag with water, and very quickly stroke 
over the glue surface, like furniture makers did a long time ago, using 
shellac and then polished the surface with rubbing alcohol.

I also tried to put car vax on a glass pane, and after painting the 
sheet press it to the glass with the glue down.Here a roller could be 
useful to press all the air out. Some layers of kleenex above, and 
finally half of my bookshelf on top. This gives the most smooth sheets, 
but it takes several hours of drying. New rewaxing is needed before 
next shoot.

But, evenmore easy, perhaps paper sheets already coated with moist 
adesive glue can be readily bought in your country (US?). In Sweden, no 
more avaliable, but I remember we used it in school (30 years ago...)
One possible source could be labels for "make-your-own-wine", if they 
can be found as sheets, not cut up.

As you can notice, this methode is not ready-to-use yet, it's strickly 
experimental, but I think it got potential.
/Lars