Homebrew PCBs

>I think this means the polygons were electrically isolated from the 
>traces.

Correct, the "Isolate" polygon attribute determines the clearance.

>There must be some way to merge 

There is....Give the polygon a name using the Name icon or Edit/Name 
when the board opens and only polygon outlines are visible. Give 
whatever you want connected to or merged with the polygon the same 
name and you'll be asked if signals should be connected then answer 
yes.

--- In Homebrew_PCBs@yahoogroups.com, "alan00463" <alan00463@...> 
wrote:
>