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I find it strange that the culprit would be the exposure unit. I use a cheapo halogen work light and I expose halftones all the time. It could be that the transparencies are scattering the light making the exposure weaker where the transparency touches the emulsion. In a pinch I've used regular printer paper with cooking oil to make it semi-transparent and I haven't had a problem getting good halftones. I just screen print as a hobby, but I rarely reburn a screen because my halftones didn't expose or they blew out. Maybe hold the pressure washer further away from the screen. Also check the age of your emulsion and make sure it isn't breaking down. If you have presensitized emulsion, they tend to last longer than 2-part. If you use 2 part you're going to have a really short shelf life unless you store it at 40°f.
Hello, I would like to try this on a grey shirt black ink. Do I invert the image like you would do to print on black shirts or not invert. Any help would be appreciated Thanks
Here’s a video on how to have max ink output on your films. Hope that helps. th-cam.com/video/y8ADueq40Qg/w-d-xo.html I was going to say one of the reasons you’re having problems with halftones is your exposure unit. It’s not meant for halftones. I have the same one and I’ve printed up to 55 lpi halftones but you need to have enough weight distributed throughout the screen and some fresh emulsion. Also not sure how your set up is but having a darkroom is a plus. the slightest light even for a few seconds could ruin your screen and it’ll be difficult to wash out. And let your screen soak for about a minute before rinsing out. That was my mistake. You have to let the water break down the unexposed emulsion for easier rinsing.
Print looks great! Pumped to see you continue perfecting your halftone process. Keep it up 🙌
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I find it strange that the culprit would be the exposure unit. I use a cheapo halogen work light and I expose halftones all the time. It could be that the transparencies are scattering the light making the exposure weaker where the transparency touches the emulsion. In a pinch I've used regular printer paper with cooking oil to make it semi-transparent and I haven't had a problem getting good halftones. I just screen print as a hobby, but I rarely reburn a screen because my halftones didn't expose or they blew out. Maybe hold the pressure washer further away from the screen. Also check the age of your emulsion and make sure it isn't breaking down. If you have presensitized emulsion, they tend to last longer than 2-part. If you use 2 part you're going to have a really short shelf life unless you store it at 40°f.
Was definitely the unit. I've upgraded since this video
Looks great man
Yo Yo! nice series.. a little tip when washing out your halftones, spray on the print side of the screen, not the ink side.
Hello, I would like to try this on a grey shirt black ink. Do I invert the image like you would do to print on black shirts or not invert. Any help would be appreciated Thanks
Honestly depends on the artwork. Most cases, yes, that's what I do
@@JeromeKnowsNothing thanks 👍
Glad you figured it out. What exposure unit did you get? I have a DIY one right now, definitely need to upgrade.
Moved to the RXP LED 20x24
Here’s a video on how to have max ink output on your films. Hope that helps.
th-cam.com/video/y8ADueq40Qg/w-d-xo.html
I was going to say one of the reasons you’re having problems with halftones is your exposure unit. It’s not meant for halftones. I have the same one and I’ve printed up to 55 lpi halftones but you need to have enough weight distributed throughout the screen and some fresh emulsion. Also not sure how your set up is but having a darkroom is a plus. the slightest light even for a few seconds could ruin your screen and it’ll be difficult to wash out. And let your screen soak for about a minute before rinsing out. That was my mistake. You have to let the water break down the unexposed emulsion for easier rinsing.
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