Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "David C. Partridge" <david.partridge@...> wrote:
>
> I printed the top and bottom layouts onto glossy magazine paper on an HP LJ 4050, and they looked just fine.  I lined them up and taped them to the PCB, and fed the sandwich through the laminator many times, but the toner stayed firmly stuck to the paper with not the slightest hint of sticking to the PCB.  The toner is standard HP 4127X, and the laminator is set to its highest setting of about 170 degrees Celsius (just under 340F).
> 
> What am I doing wrong?
There might be a plastic or oily film on the board.  I use dry film resist, but have to scrub the board with abrasive cleanser and/or very fine sandpaper to get good adhesion.

Jon