Here’s what I learned when I was using YUDU emulsion sheets. The YUDU tutorial has good information watch it a couple of times before you start. Lots of good information is also found here:
Yudu forums
This site is an excellent resource for YUDUers. Let it be noted that I no longer use the sheets as I find that liquid emulsion is just as easy as the sheets, but that’s just my opinion. Also I do not discount using the sheets either. If the YUDU sheets were not so expensive I may still be using them. They work just as well as liquid emulsion. Their high cost caused me to do some research and I found using liquid emulsion much less expensive. I also found less expensive sources for emulsion sheets. So do your research and save yourself some cash.
The first thing you should do is clean your screen just in case…. There may be some foreign substance on the screen which may ruin the emulsion. Use a bit of dish soap that has ‘NO’ hand softener in it and rinse thoroughly.
Apply the emulsion sheet to the emulsion side of the screen, that’s the side that’s smooth all the way across. The well/ink side is the side of the screen has a slight edge on the inside of the metal frame
Remove the emulsion sheets from the black envelope in an area that has no direct light from the outside. It’s best to use a darkened room with a yellow bug light if at all possible. However, I’ve just made sure the blinds were down and I have had no problems.
Be sure that your hands are dry before you remove them from the plastic bag, a drop or two inside the black envelope will cause you problems such as the emulsion sheets sticking to the envelope or each other. Separate the two sheets, you will notice that there is an extra clear plastic sheet. That’s to prevent the emulsion from getting stuck to the envelope. When you look at the emulsion sheet you will see a shiny side and a dull sticky side, the dull side is the emulsion side. Another way to find the emulsion side is to dampen your thumb and fore finger and lightly pinch a corner, the side that sticks is the emulsion side. Once you separate them and become familiar with them replace the sheets into the envelope.
When applying the sheets make sure to have plenty of water on your screen and that it’s completely covered with water. Be sure and use cold water, warm or hot water will cause the emulsion to dissolve mush faster. Some will say that too much water is not good, while that is true I say it’s better to have a bit more than not enough. You can always sponge it off, true some emulsion will wipe off but not enough to make a difference. As in the YUDU tutorial, place the emulsion sheet on the screen plastic side up and squeegee the all the air bubbles out, a damp sponge works well too. You can tell when you have air trapped between the screen and sheet when you turn it over and see light colored lines or blotches in the screen, turn the screen back over and work those out. If they prove difficult to remove, use a spray bottle, damp sponge or a wet paper towel and dampen the emulsion from the ink side of the screen. I have also worked out the air pockets from the ink side. Once you have a uniform color wipe off the excess liquid and dry the screen in your YUDU machine.
Because I live in Oregon and right now it’s the monsoon season, it has taken six cycles to dry my first emulsion sheet, which is a LONG TIME!!!!!! At first I let it go three cycles and tried to peel off the plastic. My first mistake, the sheet was not dry enough as I tore a small flap in the emulsion sheet. I stopped and dampened the area of the tear pressed it back down and put it back into the machine for three more cycles until it was dry and the plastic pulled off with no further problem. Before I burned the screen I ran a hair dryer over both sides of the screen because of the high humidity in our area. The last couple of sheets I dried with a hair dryer, moving it back and forth, up and down till it was dry that took only about five min. That is real easy and quick too. The thing I want to stress to not to go too fast and skimp on any of these steps, you may end up with problems if you do.
Cya, Al
Good points raised here, (at least the bits I could make out easily). I am color blind (protanopia to be precise). I use Safari browser (unsure if that matters), and a lot of your web page is a bit of a strain on my eyes. I don’t wish to whinge, and I know it is my problem really, but it would be cool if you could bear in mind color blind visitors whilst carrying out the next web page redesign.