Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "John van Loon" > I did it 
again tonight and got a good transfer. On further inspection I
> found I could rub off some of he traces with moderate pressure 
using my
> finger. They were all in roughly the same area of the board. Other 
areas did
> not get removed. The tones seems to flake away from the copper when 
I
> scratch it. Again the other areas have good adhesion.

It may be possible that you are overheating the toner.  I've noticed 
that it gets less plastic the more you heat it until eventually it 
starts to flake.  

I haven't tried a lexmark printer/toner for TT; is it a factory 
cartridge?