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Exposing a Screen for Screen Printing - Screen Exposure Problems PART 2

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There are several things to keep in mind when exposing a screen. Ryan Moor discusses under and over exposure, what they look like and how to avoid them, as well as the necessity of positive contact.
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Опубликовано:

26 авг 2024

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Комментарии : 56

@TheLimeCurd 4 года назад

Wow...this is by far the best tutorial lesson vid on RU-vid.

@Donsfast 15 лет назад

Thank you for another informative video. Since the start of my screen printing business I have purchased all my supplies from you because of your customer service and endlessly helpful information.

@kira7mm 10 месяцев назад

Thank u soo much ,Ryonet. Very informative and useful.

@Ryonet 10 месяцев назад

Glad it was helpful!

@Ryonet 10 лет назад

If you’re using plastisol ink, you can mix in some curable reducer to thin it down a little. As far as getting the ink softer, printing through a higher mesh count such as a 230 will help you to get a softer print. Again, if you’re printing plastisol, you can mix in curable reducer or even soft hand additive. With waterbased ink, you can mix in water.

@TheCotterFella 11 лет назад

Brilliant, I was getting that slime texture at the back of my screen with the emulsion washing out and didn't know why! Cheers bro

@mikey777799 2 года назад

Thank god for RU-vid.

@simonbleed2029 10 лет назад

Hmmm. I thought I had an exposure time issue but now I see it could be a positive contact issue, Thanks Ryo, You get a gold star

@Ryonet 10 лет назад

Thanks for watching. Please subscribe for more!

@Ryonet 13 лет назад

@bitriotrecords You are probabloy having issues because QTX is a pre-sensitized emulsion and exposes a lot faster than the DXP emulsion you started out with. Because it exposes faster it has a much smaller exposure window which basically gives you a level of forgiveness. I you are using a more basic light to expose your screens I would definately recommend switching back to a dual cure emulsion like DXP or Ryonet new WBP - Ryan

@Ryonet 10 лет назад

We unfortunately do not have any recommendations for that light as we have not tested it. You will want to do a step wedge test.

@Ryonet 10 лет назад

You will want to follow the steps on the bottle of diazo and then mix the entire thing into the pot of emulsion. If you’re using waterbased ink, you can sprits the ink with water to keep it flowing.

@tonnyabok4875 6 лет назад

Thanks a lot Ryonet, you have solved plenty of my screen printing problems. Keep it up bro

@weareteamluxury7362 9 лет назад

where is the "locked screen" tutorial? I can't find it. Been looking!

@Ryonet 11 лет назад

Make sure you're using transparent film and have enough pressure pushing down on the film so it creates positive contact with the screen.

@gallardowilliam Год назад

Thanks

@bitriotrecords 13 лет назад

@Ryonet Thanks for the tip. We have a good exposure unit - one of your aluminum looking auto UV boxes, but I just am not having good luck with the pre-sensitized emulsion so I am going to give the dual cure another shot as when we didn't know what we were doing, we were able to make good screens with it :] Actually getting in on some emulsion, screens and chems at the last minute with the wicked silkscreeningsupplies sale :]

@Ryonet 13 лет назад

@bitriotrecords thanks guys! dual cure will always exposure much eaier, it has a lot longer exposure latitude which = level of forgiveness. Good luck and email us if you have questions :) ryan

@bryantescobar9644 3 месяца назад

anyone have any idea why when i go to wash out my screen after exposing. the image that wasn’t burned becomes bubbly in a way and i end up having to peel my image instead of it washing out nicely

@RickyVaughn2 14 лет назад

you really go the extra mile .. thanks

@Ryonet 11 лет назад

great!

@Ryonet 13 лет назад

@yurmybuddy Awesome, we'll keep them coming!

@sell412 14 лет назад

Thanks man, very very helpful....

@norabruno_com 6 лет назад

thanks guys, that's so helpful!

@hagopmisak 6 лет назад

If I have UV machine that I used to use for offset plates exposure .. should I expose for 30 secs or more?

@AIRevolution360 10 лет назад

i always have this problem when the artwork has thick lines and dots, i use 43 mesh . what is the perfect time to put the screen on exposure for how long?

@str8vtec661 8 лет назад

how long should you leave a emulsion covered screen 1/1 coverage to dry before expose it?

@Ryonet 8 лет назад

it needs to be in a 40 percent or less humid environment and that typically takes about 30-60 minutes to dry

@rgirishvineeth 10 лет назад

Hi ryonet Iam using 150wtts.hallow gen light in this what is the time of expose ? please tell me & how much emulsion to mix with how much.sensatizer measurement? & After printing starts the ink was getting harden What to mix with ink to soft?

@simonbleed2029 10 лет назад

The DIY Kit said 9min expo time but if you use glass on top go a lil longer. I went 10 min and the glass and screen was hot. even burned the edge of the glass into the screen. It was a chore getting the image out, lesson learned

@Ryonet 10 лет назад

Yep, over exposure is no joke.

@dsigner786 11 лет назад

Hi Mr bryan, do u sell the pistolet u are using to wash the frame thx

@bitriotrecords 13 лет назад

What emulsion are you using here? I have noticed that when I switched to Ulano QTX, despite printing transparencies twice as dark, I am having tons of trouble washing out screens. When I used CCI DXP dual cure emulsion that came with the Ryonet Beginner kit, transparencies that were way worse than I create now washed out way better! I have used a stouffer scale to get the timing right, but still many issues with QTX. I ask because of your comment at 4:55. Sounds like DXP?

@MasterScreenPrints Год назад

Hello Ryan, my screen keep blowing out. What can be the problem? I do want to mention that it is some old emulsion over a year old. Maybe 2

@Ryonet Год назад

Hi! If the emulsion has been opened and is over a year old, I recommend getting new emulsion and following all instructions for use and storage.

@basavarajmath3502 7 лет назад

thanks

@rares7562 6 лет назад

@ryonet if you cannot see your image after burning when held up to the light what does this mean?

@rares7562 6 лет назад

Courtney Stake I’m using an hp laser jet and a Ryonet uv exposure unit. I think I found what my problem was, the transparency I bought was probably low quality and my design was thin so that probably didn’t help. I ended up doubling up my transparencies and it worked out.

@HardWerkVisuals 4 года назад

Roy Resendez so when you doubled up did you just put the design back over the same area and expose it again or did you have to start all over?

@XjoneznX 11 лет назад

the edges of my paper are showing up when i wash out the image. any help with that?

@donbufalo2728 9 лет назад

Podrian poner subtitulos para los que no hablan ingles. Hay muchos en latino america!

@clestelriffe2846 7 лет назад

I am having an issue getting a image on my screen. I have tried 3 times with absolutely no results. I have varied the exposure time from 11 to 18 minutes made sure there was pressure on film to screen and I am using the emulsion supplied with the DIY kit. Everything is done in a dark room using a bug light. What am I doing wrong?

@Ryonet 7 лет назад

Hey there! Can you please send an email to success@ryonet.com with what emulsion you're using, what screen you're coating, and all of the information about the times you've tried? We will take a look and see if we can figure out what's going wrong!

@simonbleed2029 10 лет назад

What does 2/2 coat mean in the emulsion direction? Is it coat shirt side and ink side twice? I thought it had to be thin coat? Help!!! lol

@Ryonet 10 лет назад

Yes that's exactly what it means!

@joelrosales8478 9 лет назад

How long do i expose the image if i use a 250w bulb?when o was it out with image details fall off.

@Ryonet 9 лет назад

Joel Rosales its hard to expose a screen with detail with a low wastage bulb like this, the key is positive pressure with the film, not time. Try getting more pressure on the film using glass or something like that. Also you can get a 500 watt halogen light which exposes a dual cure emulsion in about 12-13 minutes

@kentstevens3769 10 лет назад

how long should the emulsion dry for when i try to wash it out the emulsion just comes off....

@Ryonet 10 лет назад

Kent Stevens Its more about dry in a dry area, in 40% humidity with a fan it dries in about 30-60 minutes, if you are more humid than that it may take a lot longer.

@tmariezartworks1722 6 лет назад

What is the exposure time??

@Ryonet 6 лет назад

Exposure time pertains to what emulsion you are using. A one part (photopolymer) would be roughly 55 seconds and a two-part with diazo would be approximately 4 minutes.

@u360112 10 месяцев назад

What's good exposure time for Ulano Trifecta?

@Ryonet 11 лет назад

No you must wash out the image right away.

@Ryonet 13 лет назад

You sure can but I wouldn't make a habit of it.

@nicktasker7918 5 лет назад

My design won’t wash out

@Ryonet 5 лет назад

Sounds like it might be overexposed or a possible emulsion issue! Try using the exposure calculator to dial in your times. Also feel free to give our Customer Success line a call! 800-314-6390