Homebrew PCBs

bhleavi wrote:
>  
> 
>  > How about using a nylon brush?
>  >
>  > ST
> 
> I would think that a nylon brush would work also. I started using the 
> foam brushes as that is what M G Chemicals recommended to use. Whatever 
> you use needs to be something that does not scratch the Resist.
> 

The problem would be damaging fine traces. Some nylon brushes have very 
stiff bristles and would easily destroy photoresist. A toothbrush would 
be too aggressive. A synthetic paint brush is good, but I think it 
doesn't give even abrasion as a foam brush. I too often get spots where 
the paint brush hadn't completely removed resist residue. The foam brush 
seems to do a better job.

Adam