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Discuss the various aspects of screen printing. Inks, speciality printing, print locations, durability, etc.

please explain flood stroke???



 
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Old April 14th, 2007 Apr 14, 2007 4:25:58 PM -   #1 (permalink)
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Default please explain flood stroke???

Hi

Can anybody please explain what a flood stroke is?? And how to do it?

Im having a hard time figuring out that doing a stroke without any print surface, wont the ink go thru the screen and when you press on the shirt smudge.

I will be using water based inks

Please explain
Thanks
 
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Old April 14th, 2007 Apr 14, 2007 4:53:01 PM -   #2 (permalink)
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Default Re: please explain flood stroke???

okay, anyone can feel free to step in and correct me here, but this is what I remember of the flood stroke:

the ink actually should be viscous enough that merely sitting over the free areas of the stencil won't cause it to seep through - the holes in the screen are pretty tiny, and the ink is reasonably thick, so it should just sit there. don't do an actual stroke - just swipe the ink up there with a light motion that doesn't actually touch the screen.

it's been a long time since I've worked with waterbased, but that's how I remember it going down. the ink doesn't go through the screen because it happens to be over the free area - it goes through due to the squeegee.

I hope that helped. good luck!
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Old April 14th, 2007 Apr 14, 2007 6:52:41 PM -   #3 (permalink)
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Default Re: please explain flood stroke???

Quote:
Originally Posted by seibei
don't do an actual stroke - just swipe the ink up there with a light motion that doesn't actually touch the screen.
That's one way to do it, or you can hold the screen off the substrate and do a normal print stroke (into thin air essentially).
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Old April 14th, 2007 Apr 14, 2007 7:02:09 PM -   #4 (permalink)
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Default Re: please explain flood stroke???

Whith the old nazdar inks that dried through evaporation you would flood the screen between prints to avoid clogging cecil
 
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Old April 14th, 2007 Apr 14, 2007 7:16:27 PM -   #5 (permalink)
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Default Re: please explain flood stroke???

Quote:
Originally Posted by cecil
Whith the old nazdar inks that dried through evaporation you would flood the screen between prints to avoid clogging cecil
You do the same with waterbased inks in general.
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Old April 16th, 2007 Apr 16, 2007 3:44:06 PM -   #6 (permalink)
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Default Re: please explain flood stroke???

Rainier, from what I've come to understand, you should do a flood stroke before your first print stroke. This fills the mesh with ink, which then gets pushed through onto the substrate during the print stroke.

Then, I do another flood stroke after the print stroke, which fills the mesh again and prevents the residue ink from the print stroke from drying and clogging the mesh. I use a catalyst in my inks to cure them so the flood stroke stops them from curing in the screen.

I do a flood stroke as Solmu/Lewis describes... like a print stroke but with the screen lifted off the substrate so it's not touching it. Like printing in thin air.
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Old April 16th, 2007 Apr 16, 2007 4:51:13 PM -   #7 (permalink)
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Default Re: please explain flood stroke???

Quote:
That's one way to do it, or you can hold the screen off the substrate and do a normal print stroke (into thin air essentially).
This is the correct way and mimics the way an automatic works.

You can lay the screen on the platen and flood yet you might not get a true and accurate flood.
 
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Old April 17th, 2007 Apr 17, 2007 7:27:40 AM -   #8 (permalink)
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Default Re: please explain flood stroke???

When i'm printing white on a black cotton T my first stroke is hard with the squeegee almost vertical tilted maybe 10 or 15 degrees towards me,this forces the ink into the fibre,my 2nd stroke is lighter and i tilt the handle a bit lower maybe 30 degrees, then i spot it for 5 seconds or so ,the second coat or third stroke is basicaly a flood stroke,handle at 45 deg.smooth light pass and its ready for the dryer. cecil
 
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Old April 17th, 2007 Apr 17, 2007 10:11:01 AM -   #9 (permalink)
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Default Re: please explain flood stroke???

thanks guys

Ill try it
 
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Old April 17th, 2007 Apr 17, 2007 10:41:32 AM -   #10 (permalink)
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Default Re: please explain flood stroke???

mikiec,

When you say first stroke, do you mean first stroke for each shirt? Or do you mean the first stroke for the job?

Ben
 
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Old April 17th, 2007 Apr 17, 2007 12:54:11 PM -   #11 (permalink)
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Default Re: please explain flood stroke???

each shirt. Some white printes reguire more than one print/pass to get proper ink transfer
 
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Old April 19th, 2007 Apr 19, 2007 9:46:00 PM -   #12 (permalink)
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Default Re: please explain flood stroke???

Quote:
Originally Posted by Solmu
That's one way to do it, or you can hold the screen off the substrate and do a normal print stroke (into thin air essentially).
So for the flood stroke you recommend that you press firmly to force ink into the screen. Then you set it down and clear the screen with one of two strokes. This may be a stupid question but why is this better than flooding lightly over the image area and then putting it down and clearing the screen with a print stroke? Not that I'm saying its wrong it's just I'm new and I'm really trying to get a grasp on good technique. Does it have something to do with really filling the open holes before you try to get the ink on the shirt? Sorry so many questions.
 
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Old April 19th, 2007 Apr 19, 2007 9:50:23 PM -   #13 (permalink)
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Default Re: please explain flood stroke???

Quote:
Originally Posted by dmarshall83
why is this better than flooding lightly over the image area
It should fill the mesh better, and it's quicker (more efficient).
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Old April 20th, 2007 Apr 20, 2007 2:13:53 AM -   #14 (permalink)
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Default Re: please explain flood stroke???

Quote:
Originally Posted by cecil
Whith the old nazdar inks that dried through evaporation you would flood the screen between prints to avoid clogging cecil
Yes, cecil hates to be clogged..
 
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