large pos photo board
2006-04-07 by yam01545
i am having trouble exposing a 12" x 12" pos phot board. i have done this before on smaller boards successfully. i am using two MG chemicles 15 watt light fictures at each end of the board. the center of the boards develop ok but the corners aren't getting enough uv. i was wondering if anyone has successfully exposed a 12" X 12" board ? if so how. thanks