> In a message dated 8/18/2004 5:42:46 PM Eastern Daylight Time, > techsupport@FALCONWIRELESS.NET writes: > > I just blew $50.00, a 12"x18" board after exposing using 2 #2 photofloods > 20" above the board exposed for 30 minutes. I got a good "image pop-up" when > I placed the board in the developer tray, then the entire emulsion floated > away. > Anyone else ever have this happen? the Litho had excellent contrast, dark > areas completely block sunlight. > The only 2 things I can think of is 1 my D3P concentrate has gone sour, or 2 > the board being warm to the touch had the emulsion softened by heat and was > washed away after 30 sec in the developer. > I want to figure out what went wrong with the first board before trying > another @ $50.00 per attempt. > > KF4HAZ - Lonnie ----- From: "Randy Abernathy" The one thing I don't see mentioned is whether the board was pre-sensitized > or not. If it wasn't pre-sensitized then how well and what method did you > use to clean it? It was Pre-sensitized, the developer was mixed 1+7 as I have used before. KF4HAZ - Lonnie -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu