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Discussion Starter · #1 ·

I'm relatively new to screenprinting, and have been using Speedball Diazo emulsion. The first batch I used worked just fine and I got some nice screens out of it.

But the second batch I've mixed just doesn't seem to be working. The screens aren't clearing properly after burning and the burned emulsion seems much darker (almost black) instead of the dark green of the previous batch.

I can't find any info on what's causing this. Is it just a bad batch of emulsion? Too thin a coat? Any help would be greatly appreciated.

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