Should be able to expose the screen for 45 seconds - 1 minute if it is a dual cure emulsion! Also helps if you put more pressure on the glass thats over the film. Have to think more like how a vacuum system works with adding pressure.
Thank you very much for your video and clear explanation👌! I have a question, what does the time we give to development depend on? And does the screen number have anything to do with the time? I'm planning to reveal a small logo with thin letters to use with water based ink. Thank you!!!
The time to develop in the sun will be dependent on which emulsion you are using, so you will need to do your own exposure testing to see what works best for your set up
Right ta, so curious about this. I just want to set up a couple of screens to print on my own clothes, I'm not starting a business, looking at people calculate exposure times etc I just thought it was too hard especially as I have a brain injury and my maths not there anymore. My question is if using the sun is there a way to tell by looking at the screen or how it feels to know if it's been exposed long enough or is it the case you just have to trial and error it to find the right time?
We’ve only tested our own emulsions, but it should work. You may need to play around with exposure time depending on how wide the exposure latitude is on that emulsion.
