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TRADE: LED for 3140
lancasterprinthouse:
--- Quote from: Frog on June 08, 2019, 02:28:27 PM ---
--- Quote from: lancasterprinthouse on June 08, 2019, 01:28:10 PM ---
--- Quote from: CBCB on June 07, 2019, 11:54:02 PM ---Curious... why?
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We are primarily a water based shop and the LED doesn’t produce a strong enough stencil without post hardening in the sun.
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This issue has been discussed here, and there have been recommendations for some emulsions that seem to work better than others with LED, though of course, also, not all LED's are created equal.
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Right. I would trade for a starlight but that’s not going to happen. I read all 300-some comments in the one thread about MH vs. LED. I use T9 and it has helped. Short runs I’m ok. Long runs need a lot of post hardening. Something that’s hard to do in rainy season here.
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gotshirtz001:
^ Team MH here!
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Sbrem:
We both the Saati 450w a few months ago, and it was suggested we keep the old Violux 5000S MH around for post hardening when needed. So, we expose the the Saati, then post expose with the 5000S.
Steve
Maff:
Oh man we have gone through a lot of adjustments to get our Discharge and waterbase screens solid with our LED.
We also have the Saati 450w (ryonet fx) and we have found the best results by Overexposing our screens by almost 2X, to a solid 9-10 on the 21 step calculator.
I have heard of other bigger shops that also overexpose there discharge screens even on a starlight for even longer.
For long runs we also add reclaimable hardener to the screen and post expose for up to 20 min just for added security.
We also add Aqua Block across the top and bottom of the screen where squeegee starts and stops.
It's a lot of extra steps, but we used to struggle to get past 100 shirts without a breakdown on a discharge screen. Now with doing all this we have done a few 500-800 piece discharge orders without a breakdown.
I think when this unit dies I'll consider switching back to MH exposure though....
3Deep:
HXT is a good emulsion for DC/water base ink printing just add some diazo to it and expose a little longer, I've did small run's of 50 to 72 pc without using the diazo I just exposed a little lnoger.
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