Homebrew PCBs

Tom, thanks for the excellent information again.

I already have a litre of some black Inktech satin poster ink (and a 
gal. of 'wash up'), which someone advised could be used for PCB's. The 
wash up smells up the house quite strongly, and for a day or two, and 
since I work out of the house with clients, I hesitate to use it 
often.

I think I will look for something for PCB's which can be removed with 
a lye solution instead.

-- In Homebrew_PCBs@y..., "twb8899" <twb8899@y...> wrote:
> Grant,
[snip]
> If you are just getting started with screen printing I would suggest 
> getting the air dry etch resist. This type of resist is inexpensive 
> and works good. Buy the smallest quantity they offer. These inks 
will 
> cover about 3000 square feet per gallon when using a 305 mesh 
> polyester screen.
[snip] 
> BTW, the screen printing emulsions are negative acting so you will 
> need positive films emulsion side up. 

My PCB software (Ivex Winboard)will not print my artwork as a 
positive, so I will be looking for a way of turning the art into 
positives. Kodak used to have a high contrast film which was good for 
this, but it doesn't seem to be available anymore. I noticed a product 
for this purpose mentioned recently on this list. Any other ideas?

Grant