buy4now1

I have been using a 110 mesh. I recently bought a 235 mesh to experiment with halftones and more detailed images. Is there a significant difference in exposure time? does the 235 take more time to expose than the 110. Should I use the same step wedge test that I used on the 110 ?

 

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hcp482

It really depends on the manufacturer of the emulsion! As far as exposure time the difference in time could be as little as 30 seconds but the time can make or break the quality of exposure! I would do the wedge test. At least then you will no for certain the time and will not burn through screens trying to figure it out! You can also call the manufacturer and ask what the suggest!

 

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TshirtsOnYou

Yes the time will vary!
Make your own test film sep - 20% screen up to 100% plus thick lines & fine lines, waves & circles, Gradients & patterns al on ONE film sep.

Test 2-3 screens with black ink on white & keep your records of you burn times. We're in Florida & when the rains come we have ot watch the screens stay consistant in the AC darkroom.

PLUS -make a skinny test strip that you can add along side seps on every screen for awhile. That will make a history for your shop & your needs.

 

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buy4now1

I'm also in Florida. And suprise it was raining at the time. I did blow dry the screen first to make sure there was no moisture. I tried to expose it for the same amount of time as my 110 mesh. ( 22 min) I definitely need to do the wedge test. I ended up washing out over half the exposure.

 

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