Homebrew PCBs

That kind of misses the point.  I am looking to see if anyone knows 
of a suitable etch resist ink, and/or a suitable soldermask ink.

If I do decide to go your way and do the transparancy method with UV 
sensitive photoresist, I have a few questions.

How do I know when I have the proper exposure?

Can you over-expose?  

How dark black does the transparancy need to be for this method to be 
effective?

I have access to some pretty sophisticated hardware if I do decide to 
try this method.  Items such as a photoplotter, a vacuum backed UV 
table (for exposing printing plates) and more, but it is a hassle to 
go there for all the neat toys.

I don't think there would be any issues with the image size not being 
exactly 100% as it is a professional photoplotter designed to make 
printing plates for magazine reproduction.

Potentially, I may just have to experiment with different inks if 
nobody has any suggestions.  

Does anyone print legends on thier prototype boards?  

Does anyone use anything to add a soldermask?  

Does anyone even use any type of conformal coating?



> Im my opinion you're much better off using photoresist coated 
boards.
> 
> Print your layouts using the right transparent medium for your 
printer
> (laser or inkjet) and use that to expose the board under UV. I made 
a
> suitable lightbox with tubes sold as spare parts for the ready-made
> unit sold by Maplin. I also use ready-prepared developer and etcher
> from them and get a great result every time.
> 
> Cheers
> 
> Derryck