Author Topic: Testing underbases  (Read 300 times)

Offline Cole

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Testing underbases
« on: November 07, 2018, 04:52:39 PM »
I had some free time today, so I decided to test some different underbases and see what happened. The three that I tried were

1) 100% D-Base (CCI) printed through 150s mesh
2) 80% D-Base 20% D-White (CCI) printed through 150s mesh
3) Aquaflex V2 (Magna) printed though 150s mesh

I didn't spend any time registering these colors since that wasn't the point of the test. So please don't judge my horrible registration  ;D

All the top colors were done with 180s mesh. In hindsight, I should have done 225s to combat screen pickup.

The 1st photo below is 100% D Base, no flash, W-Base with CMS pigments for the blue, Aquo HSA for the green. I wanted to use two different types of top colors (waterbase and HSA) to see which had better opacity. Obviously HSA has awesome opacity, but I wanted to know if it was NECESSARY in order to get a bright print. I was actually really surprised how well the blue came out. The color accuracy was close, but not close enough. So I thought I'd try printing it again with a flash.

The 2nd photo is when I flashed the base for 3 seconds at 300 degrees and then layed down the top colors. This time the colors were accurate. One big issue I had was pick up on the blue screen from the green. I figured that might happen since the green was HSA, but I thought I'd try it out anyway. I'll need to do some more testing with 225s to see if this fixes the problem, but for now I'm going to live by the rule of "HSA get printed last".
For all you water base printers out there, do you print regular waterbase over underbases? Or is HSA the standard for overprints?

The 3rd test (not pictured) is of 80/20 base with Aquaflex V2 on top. I really like how this one came out. I've messed around with printing HSA white on top of discharge to really get a WHITE white, but I've mostly been doing straight D-White for my white prints on darks. I think I definitely want to incorporate printing HSA on top. When doing this, I can probably stick with 180s mesh for the top white. I don't think 225s would be necessary.

The 3rd photo is 80/20 base on 50/50 blend tees. I figured this wouldn't turn out well and it didn't. I honestly try to steer my customers away from 50/50 because I hate underbasing. I know that's selfish, but until I've got a method for printing water base on 50/50, I'd rather not touch it.

The 4th photo is of Aquaflex V2 as the base with green Aquo HSA on top. This is on a 50/50 blend shirt. I think it came out pretty good, but I'm really scared of adhesion issues. I've heard some bad stories about using HSA as an underbase and having the top colors flake off in the wash. I'm going to wash these test shirts tonight and see if everything holds up. If anyone has some advice about using HSA as an underbase, let me know!

Finally, the 6th test (not pictured) was 100% D-Base on an 80/20 blend crewneck from Independent. This one turned out okay, but I definitely need to do some more testing. I normally do a discharge underbase with plastisol on top, but I'd really like to do 100% water base on fleece.

I am a totally self taught printer, so all of these tests are just me trying to figure things out. Some of them may make no sense to an experienced printer. That being said, if there are any more tests that you guys think I should do, let me know. Or if there is a better method to help me achieve my goal of creating bright 100% waterbase prints, please share. As always, critiques, suggestions, and guidance is always appreciated!


Offline Dottonedan

Re: Testing underbases
« Reply #1 on: November 07, 2018, 08:31:12 PM »
Good stuff right there!   I appreciate the breakdown. Great examples.
Artist & Sim Process separator, Co owner of The Shirt Board, Past M&R Digital tech installer for I-Image machines. Over 28 yrs in the apparel industry. Apparel sales, http://www.designsbydottone.com  e-mail [email protected] 615-821-7850

Offline Cole

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Re: Testing underbases
« Reply #2 on: November 08, 2018, 11:06:58 AM »
Good stuff right there!   I appreciate the breakdown. Great examples.

Thanks Dan! I try to test during the slow times. I'm at the point where I feel guilty taking days off when I could be educating myself.

Hoping some others will chime in with their experience!

Offline tonypep

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Re: Testing underbases
« Reply #3 on: November 08, 2018, 03:15:13 PM »
Let me know I am here. Cheap but its not free (Steely Dan song) can anyone guess?