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Screen Washout Problem

Postby BLG » Wed Aug 29, 2012 9:02 pm

So after i exposed my screen i went to was it out and it was going fine until i noticed a section that looked as if it was peeling away from the screen. As i continued more and more seemed to be peeling from the screen and some of it looked like it was melting.

What could it be?
water pressure too high during washout?
emulsion not allowed to dry long enough?

I do have a picture of the screen if needed.

Oh and im brand new to this.
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Re: Screen Washout Problem

Postby Shenandoah Designs » Sun Dec 02, 2012 12:27 pm

I have found that if I don't let the emulsion dry overnight I have that problem. How long did you let the emulsion dry before exposing it?
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Re: Screen Washout Problem

Postby ChrisScoff » Wed Dec 26, 2012 9:41 pm

For smooth exposing you have to select right kind of screen cloth number and screen light house should be equipped with right kind of lighting equipment. Then you have to give enough time to exposed screen for drying. I Hope it will solve your problem.
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Re: Screen Washout Problem

Postby kiliprint » Thu Feb 21, 2013 7:32 am

Hi,

I got the same problem here

I just used a hair dryer to dry the emulsion

Didn't let it dry overnight, here's what I get



Is it really necessary to let it dry this huge amount of time? thx
Attachments
2013-02-21 12.47.07.jpg
wash out
2013-02-21 12.47.07.jpg (176.92 KiB) Viewed 2818 times
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Re: Screen Washout Problem

Postby d fleming » Thu Feb 21, 2013 11:40 am

Heat and light will kill the photographic qualities of emulsion. The dryer is a no-no.
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Re: Screen Washout Problem

Postby kiliprint » Sat Feb 23, 2013 5:34 am

what to do then?
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Re: Screen Washout Problem

Postby yaleteamsandtees » Sun Feb 24, 2013 12:09 am

De-greased properly?
Insufficient drying?
Underexposure?
too much pressure on washout?

What emulsion and light source are you using?

-Rob
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Re: Screen Washout Problem

Postby Chako4031 » Mon Dec 26, 2016 6:45 pm

Was there ever any resolution to this thread? I'm having same issue. What is to long to let emulsion dry. Is 48 hours to long?
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Re: Screen Washout Problem

Postby d fleming » Wed Jan 04, 2017 11:42 am

no
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Re: Screen Washout Problem

Postby BigHE » Mon Oct 09, 2017 8:19 pm

I was having the same issue when I first started. The only real solution for me was time. I coat and let sit overnight before exposing.

If I'm in a bind I will use a blow dryer, but I try not to be in a bind.

When using a blow dryer, I have had better success with some emulsions over others.

What are you using? Believe it or not, I had little issue with Speedball Diazo. Right now I exclusively use Ryonet WBP (I've had no issues to date). I have had success with both of those and a blow dryer in a pinch. I do post expose as well.

Over night for me was 6-8 hours at the shortest.
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Re: Screen Washout Problem

Postby BigHE » Mon Oct 09, 2017 8:22 pm

Wow. I just realized how old this was.
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