Please help, when i burn an image my screen blows out 8 out of 10 times. what could be the cause of this?
I clean,and degrease, and put emulsion on them, let dry. burn for three minutes and rinse, i usually make 30 at a time but do not use them right away, sometime i wont burn in a month, i thought this could be the trouble so i just made 6, let dry with a fan for about 45 minutes, burned and it just blew out, my water has a bleaching system could this cause my trouble?
does the whole screen blow out? what are you using to expose? what are you using wash out you image ?
yes, the first place is blows out is next to the image, I have a home made vacuum exposure unit, the image is there but as soon as it brakes apart it all goes, i use cold water from a pressure washer, i start out light and rinse both sides, about 5 times each, let it soak for a few then turn up the pressure, but, the pressure is still light, it takes about 10 minutes to get a good image wit the pressure i use, and i can actually blow all of the emulsion of the screen with light pressure
i usually make 30 at a time but do not use them right away, sometime i wont burn in a month, i thought this could be the trouble so i just made 6, let dry with a fan for about 45 minutes, burned and it just blew out, my water has a bleaching system could this cause my trouble?
so you just coated 6 screens, air dryed them for 45 mins, then exposed? no good. i always let my screens dry for at least 12 hours. that being said, are you sure you aren't under exposed with other screens? all the emulsion blowing out sounds like not enough time. the more you use your exposure unit, the longer the time has to be increased (gradually over time).
i start out light and rinse both sides, about 5 times each, let it soak for a few then turn up the pressure, but, the pressure is still light, it takes about 10 minutes to get a good image wit the pressure i use, and i can actually blow all of the emulsion of the screen with light pressure
its shouldnt take take longer then 2-3 min to clear a image.
i just let them burn for 5 minutes and it was much better, but not great, i am wondering if my bulb is on its way out, so is letting the screens sit for a month OK?
month can be long... i try to use within about 2 weeks. try coating your screens, let them sit over night, and burn for a little longer. your emulsion is good right? i think a dual mix is good for about 6 months...
yes I am using dual emulsion, i just burned another for 8 minutes and lost it all, but it was a screen i just made, so most likely that is the issue, i have a few more i am going to try
yes I am using dual emulsion, i just burned another for 8 minutes and lost it all, but it was a screen i just made, so most likely that is the issue, i have a few more i am going to try
Sorry, yes I believe my emulsion is still good, it is not thick yet
i just upped my time from 3 minutes to 12 and it still blew out, could it be the screens? i bout some screen cleaner that supposedly had degrease in it ( no need to degrease)
i say you clean and degrease your screens good, let them dry, coat them and let them sit overnight. 12 minutes seems long, especially if you got a noticeably better image at 5 minutes... make sure your image is nice and black, double up your transparencies if you have to, and burn it for six to seven minutes. see what happens
Image blow out 
