Homebrew PCBs

On Mon, 11 Jul 2016 04:00:54 +0000, you wrote:

>I'll throw this out there just in case.....
>
>Is the copper really clean?  If water beads up on the copper *anywhere*
>the copper isn't clean enough for laser toner-resist....water should just
>"spread out" on the copper.  
>
>When scrubbing the board with say, "Bar Keeper's Friend powder", before
>applying
>the toner, pay special attention to the corners.
> 
>Charlie
> 

Last cleaning  step; Wash the board off with 90+% alcohol, 
tilt the board  and air dry. Either let it sit awhile or place in front of a fan.
Keith Bowers WB4LSJ- Thomasville, NC