Any advice on how to get bits of opaque ink out of my screen? I made the mistake of using 180 mesh – it printed beautifully but the ink will just not completely come out no matter how long I blast it with the pressure washer.
You can soften the stuck in ink with denatured alcohol (a heavy dose) and try blasting it out again. The ink will absorb the initial dose so let it sink in and then reapply. If it works the ink should turn gummy. It it doesn't turn gummy then dehazing is your best bet. If you spend more than an hour working on this then you would have been better served get the screen restretched.