Homebrew PCBs

You usually have to remove that residue. A soft bristle brush (old tooth 
brush) does the trick with the paper I use.
  I find if I leave it on with epson glossy paper, it won't etch though the 
residue and I get bridges.
  If it was totally water soluble it would have come off with the paper.

-carl

At 04:29 PM 10/24/2005, you wrote:
>Okay, it's been about 30 minutes and the paper floated off - got good
>transfer.  However, there is a white film, almost like extremely thin
>paper still on the toner - don't know what it is but not sure if it
>matters or not.  Is it okay to etch it with this still on the board?
>
>For what it is worth, this circuit, albeit very simply has the finest
>traces and the closest together I have done to date.  If it etches
>good, this is great!
>
>Chris
>