Exposing a Screen for Screen Printing, Screen Exposure Problems PART 2

A continuation of this video tutorial. This video covers a few more issues when it comes to exposing your films for screen printing including under and over exposure, and lack of positive contact. Hope this helps! Check out our page for more screen printing info or our website for supplies!

Category:

Education

Tags:

• screen
• printing
• silk
• screening
• t-shirt
• ink
• white
• water
• absed
• plastisol
• exposure
• riley
• hopkins

[Ryonet]

You sure can but I wouldn't make a habit of it.

[bitriotrecords]

What emulsion are you using here? I have noticed that when I switched to Ulano QTX, despite printing transparencies twice as dark, I am having tons of trouble washing out screens. When I used CCI DXP dual cure emulsion that came with the Ryonet Beginner kit, transparencies that were way worse than I create now washed out way better! I have used a stouffer scale to get the timing right, but still many issues with QTX. I ask because of your comment at 4:55. Sounds like DXP?

[Ryonet]

@bitriotrecords You are probabloy having issues because QTX is a pre-sensitized emulsion and exposes a lot faster than the DXP emulsion you started out with. Because it exposes faster it has a much smaller exposure window which basically gives you a level of forgiveness. I you are using a more basic light to expose your screens I would definately recommend switching back to a dual cure emulsion like DXP or Ryonet new WBP - Ryan

[bitriotrecords]

@Ryonet Thanks for the tip. We have a good exposure unit - one of your aluminum looking auto UV boxes, but I just am not having good luck with the pre-sensitized emulsion so I am going to give the dual cure another shot as when we didn't know what we were doing, we were able to make good screens with it :] Actually getting in on some emulsion, screens and chems at the last minute with the wicked silkscreeningsupplies sale :]

[Ryonet]

@bitriotrecords thanks guys! dual cure will always exposure much eaier, it has a lot longer exposure latitude which = level of forgiveness. Good luck and email us if you have questions :) ryan

[yurmybuddy]

Yeah, this video was seriously really helpful. I've been screenprinting for years and I could never pinpoint the reasons why certain things were happening.

[Ryonet]

@yurmybuddy Awesome, we'll keep them coming!

[jerensgorawr]

After I expose my image can I wait 24 hours before I rinse it out?

[bliznak]

Thanks for these really helpful videos! I have a problem which is not really described here. After washing out the exposed screen the negative is there, clearly visible and perfect but 10 or 15 minutes later while the screen still dries the emulsion gets all runny and hazy on the edges of the negative. Do you know what the problem might be?

[NuQLER]

Thanks... very helpful for a first time screen printer! Could not figure out if I was under or over... now I know!