"He who marches out of step hears another drum." ~ Ken Kesey
The most important things are making sure all your micro's are zero'd out to the same position
Quote from: kirkwad on October 18, 2018, 01:08:49 PMThe most important things are making sure all your micro's are zero'd out to the same positionI've always wondered why this was so important??? I've always thought that the screens would be in the same position regardless since the screen is hitting the 3 stops on the pallet jig and my thought was that even if the micros weren't zeroed than it should still me in the same place after they're locked. Am I missing something?Jon
Quote from: repogolfer on October 18, 2018, 02:09:39 PMQuote from: kirkwad on October 18, 2018, 01:08:49 PMThe most important things are making sure all your micro's are zero'd out to the same positionI've always wondered why this was so important??? I've always thought that the screens would be in the same position regardless since the screen is hitting the 3 stops on the pallet jig and my thought was that even if the micros weren't zeroed than it should still me in the same place after they're locked. Am I missing something?JonIf your micros on head 1 are zero'd out & your head 4 has your micros to the left, when you test print the screen in head 4 will print further to the left in relation to the print in head 1. Even if you're zero'd out on all your heads you generally have to make the slightest adjustment, but it is dramatically less than if you don't zero out all your micros.Another tip is after you lock in all your screens, print 2 test scraps on the same cycle for your first test print & then make your adjustments off of scrap #2. This is because generally the first hit will pull the screen a little more than the second. This is because the ink isn't covered over the entire area your squeegee is hitting causing the squeegee to pull harder on areas of the screen that don't have the ink "lubricating" the pull.
Quote from: kirkwad on October 19, 2018, 09:58:02 AMQuote from: repogolfer on October 18, 2018, 02:09:39 PMQuote from: kirkwad on October 18, 2018, 01:08:49 PMThe most important things are making sure all your micro's are zero'd out to the same positionI've always wondered why this was so important??? I've always thought that the screens would be in the same position regardless since the screen is hitting the 3 stops on the pallet jig and my thought was that even if the micros weren't zeroed than it should still me in the same place after they're locked. Am I missing something?JonIf your micros on head 1 are zero'd out & your head 4 has your micros to the left, when you test print the screen in head 4 will print further to the left in relation to the print in head 1. Even if you're zero'd out on all your heads you generally have to make the slightest adjustment, but it is dramatically less than if you don't zero out all your micros.Another tip is after you lock in all your screens, print 2 test scraps on the same cycle for your first test print & then make your adjustments off of scrap #2. This is because generally the first hit will pull the screen a little more than the second. This is because the ink isn't covered over the entire area your squeegee is hitting causing the squeegee to pull harder on areas of the screen that don't have the ink "lubricating" the pull.I don't see how this can be correct with a tri-lock... unless it's bumping against the hanger or something is physically interfering with it hitting the 3 stops, it should be EXACTLY the same regardless of any differences in micros.
perhaps zeroing the micros is just a good habit in general to allow for possibly needed adjustments in either direction on all heads.Raise your hand if you've never run out of needed adjustment on one head, on a press without a really accurate pre-reg system.