Homebrew PCBs

Edges can be a problem even with a laminator.  I've attributed those 
problems to either not cleaning along the edge as well as I should or 
not deburring the cut edges.  The later is the more common problem.  
If any of the copper is protruding above the rest of the surface the 
rollers can give irregular pressure in that area and not fuse as well 
as other areas.  I debur the edges with a deburing tool and sand the 
edges now when I cut down stock to be used.  Rotating the stock 
during multiple passes also helps to solve this problem.  Also I 
always print the board border when doing toner transfer.  This helps 
to minimize the pucker of the paper when it gets wet.

--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan 
<stefan_trethan@g...> wrote:

> One edge of the pcb didn't work well. Toner not fused. Maybe bad 
prepared 
> or not constant pressure.
> 
> But the rest almost looked like it may have resulted in a useable 
pcb.