Homebrew PCBs

> put in the developer a unexposured pcb, it may not disolve the 
resist 
> if it dos its to strong 
> I think your to short in exposure time or maybe lights to far away-
> 3 to 4" is normal distance
> And be shore that the daylight must be tempered a bit 
 
Would not think it is too short exposure time if all the resist is 
coming off when developed.  

Sounds more like his image and the transparency is not dark enough 
or he is getting the board exposed to light before transparency is 
in place or after exposure and before going into the developer.  
These should be the only reason for all the resist to be removed in 
the developer or that the developer is for some reason way too 
strong.  His exposure time should be OK.

Ben