My Screen Goo saga:
I recently painted my MDF screen (details here) with High Gain CRT goo from goosystems. Actually I painted it twice...
The first time I rolled the primer on, no problems, looking great. Then I rolled on the goo, hung the screen and as it cured I noticed a very uneven gain. While rolling I kept thinking... KBK really recommends spraying this, but since the room is finished and the board does not easily go up the stairs, I'll try rolling it, thereby rationalizing my decision.
After a month of living with this, I took it down, built a makeshift spraybooth in the storage room and sprayed the screen again with the remaining goo using a Wagner Power Painter. Even before it was dry I could see this was the way it should have been done the first time, then disaster struck. I knew I was near the end of the paint supply, but I felt I could get a few more passes out of it...wrong! The next burst of paint ended with the sprayer flinging fat paint goobers across part of the screen.
I tried integrating the globs with a foam brush, and thought it was ok, so after it dried I rehung the screen and tried it out. The area where the paint globs were had a higher on axis gain than the rest of the screen, resulting in dreaded hot spotting. I tried touching up that part with the last of the goo and a foam brush, but this made it worse.
Finally I found a solution, short of repainting the screen. I used some 150 fine grit sandpaper and gave the hot spots a once over lightly. Fired up the projector and the spots are gone!
Bottom line: I am now a happy with the screen, it yields a bright picture with no off axis color shift problems at all. If you are considering using the high gain goo, don't even think about rolling it.
I recently painted my MDF screen (details here) with High Gain CRT goo from goosystems. Actually I painted it twice...
The first time I rolled the primer on, no problems, looking great. Then I rolled on the goo, hung the screen and as it cured I noticed a very uneven gain. While rolling I kept thinking... KBK really recommends spraying this, but since the room is finished and the board does not easily go up the stairs, I'll try rolling it, thereby rationalizing my decision.
After a month of living with this, I took it down, built a makeshift spraybooth in the storage room and sprayed the screen again with the remaining goo using a Wagner Power Painter. Even before it was dry I could see this was the way it should have been done the first time, then disaster struck. I knew I was near the end of the paint supply, but I felt I could get a few more passes out of it...wrong! The next burst of paint ended with the sprayer flinging fat paint goobers across part of the screen.
I tried integrating the globs with a foam brush, and thought it was ok, so after it dried I rehung the screen and tried it out. The area where the paint globs were had a higher on axis gain than the rest of the screen, resulting in dreaded hot spotting. I tried touching up that part with the last of the goo and a foam brush, but this made it worse.
Finally I found a solution, short of repainting the screen. I used some 150 fine grit sandpaper and gave the hot spots a once over lightly. Fired up the projector and the spots are gone!
Bottom line: I am now a happy with the screen, it yields a bright picture with no off axis color shift problems at all. If you are considering using the high gain goo, don't even think about rolling it.
