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screen printing => Newbie => Topic started by: spencer_L&KC on August 07, 2025, 02:03:49 PM
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Like the title says, is over flashing actually something to be cautious of? Or is it a myth? Obviously leaving the shirt under the flash for extended times isnt great, but when it comes to making sure to keep a print tacky, how important is it really?
Has anyone here ever seen top colors not adhere to a base, and maybe even come off, not from under curing, but from flashing too long?
Has anyone here ever seen a second pass of white come off the first pass?
I have been printing since 2011, printing professionally since 2018. I have never once seen a top color or second pass of white detach from a base, and I know for sure that at some point I "over flashed" a print or two in that time. Still though, no issues with top coats adhering to the base. Another user on here mentioned in another thread that "over flashing" could be a myth, so I am very curious to hear what some of the other pros think on the subject. I am not a newbie, but posted here so actual newbies can find and learn from this thread.
So what say you? Thanks for reading!
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As far as ink failure on top colors, you'll ruin the shirt long before you see any issues there.
The only time over-flashing is an issue can be on some high polyester items, as excess heat exacerbates dye migration. But that is easily solved with any decent ink.
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Yes, it's absolutely a thing. Over flashing can lead to what look like white dots in your print. they only show up after the oven, or even when you pull your shirts.