Exposed Screen Not Washing Out. - T-Shirt Forums
 

Hi, Unregistered. | Today's Posts

T-Shirt Forums
User Name
Password

Register Today For Free!

Forgot Your Password?





Site Navigation







+   T-Shirt Forums > T-Shirt Forums.com Announcements > T shirt Printing Issues
Having trouble making your T shirt? Post here



Exposed Screen Not Washing Out.

Like Tree1Likes
  • 1 Post By sben763

 
Share This Thread Thread Tools
Old May 11th, 2015 May 11, 2015 1:50:57 PM -   #1 (permalink)
T-Shirt Lover
T-Shirt Fan

csok's Avatar
 
You can call me: Chad
Member Since: Nov 2008
Location: Washington
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks: 18
Thanked 6 Times in 5 Posts


Default Exposed Screen Not Washing Out.

I just built a Pulse Start Metal Halide 1000 watt 10k vacuum unit.

The light source is about 25" from the glass.

It's a cool tube fixture with a 6" inline fan. Thinking that this was adequate, I didn't put a fan in the main cabinet, just the cool tube.

After what I have read I think it may be a cabinet/glass heat issue, but I want an expert opinion.

The film positive was sticking to the emulsion slightly after all these burns. Is this normal?

Here are the details.

I am using:

Murakami Photocure Blu.
Coating with round edge 2:1
using a SAATIprint 21 step guide

I had a successful exposure on 160 mesh at 3:00 but it was only a solid step 6 now that I look again. It gets weird after this....

So, I burn 3 x 110's - 1st for 3:40, way over,
(dont follow the guide but drop it to what was successfull on 160)
burn for 3:00, still 3 steps too much.
Burn for 2:06 like the guide says and I get a solid step 7
(I think I was too hard and washed it down to 6)
but some of my art doesn't wash out.
I tried to wash it out for about 5:00

Thanks for the advice,
Chad
Attached Images
File Type: jpg DSC_9704.JPG (5.19 MB, 26 views)
File Type: jpg DSC_9706.JPG (5.31 MB, 21 views)
File Type: jpg DSC_9707.JPG (5.29 MB, 24 views)
 
Sponsored Links
Advertisement
 
Old May 11th, 2015 May 11, 2015 2:21:31 PM -   #2 (permalink)
Senior Member
T-Shirt Mogul


Printor's Avatar
 
You can call me: Jay
Member Since: Apr 2015
Location: SoCal
Posts: 1,457
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Thanks: 47
Thanked 209 Times in 201 Posts


Default Re: Exposed Screen Not Washing Out.

The gauges are nice if your film is output at the same perfect quality the gauge was. that's rare. some times it's more useful to design your own gauge and print it with your film printer, since that's what you really have to work with. If your film isn't perfect, I'd go old school and under expose it until it falls apart, and go up from there.
 
The Following User Says Thank You to Printor For This Useful Post:
csok (May 11th, 2015)
Old May 11th, 2015 May 11, 2015 2:36:44 PM -   #3 (permalink)
Senior Member
T-Shirt Mogul


Printor's Avatar
 
You can call me: Jay
Member Since: Apr 2015
Location: SoCal
Posts: 1,457
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Thanks: 47
Thanked 209 Times in 201 Posts


Default Re: Exposed Screen Not Washing Out.

Also I cant tell how big that image is from the pics it might need a 150-160 if your coat is thick.
 
The Following User Says Thank You to Printor For This Useful Post:
csok (May 11th, 2015)
 
Old May 11th, 2015 May 11, 2015 2:37:20 PM -   #4 (permalink)
T-Shirt Lover
T-Shirt Fan
Thread Starter

csok's Avatar
 
You can call me: Chad
Member Since: Nov 2008
Location: Washington
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks: 18
Thanked 6 Times in 5 Posts


Default Re: Exposed Screen Not Washing Out.

Quote:
Originally Posted by Printor
The gauges are nice if your film is output at the same perfect quality the gauge was. that's rare. some times it's more useful to design your own gauge and print it with your film printer, since that's what you really have to work with. If your film isn't perfect, I'd go old school and under expose it until it falls apart, and go up from there.
That's a good point! My films have a frosted look.
 
Old May 11th, 2015 May 11, 2015 3:18:05 PM -   #5 (permalink)
TSF Veteran
Certified T-Shirt Junkie

sben763's Avatar
 
You can call me: Sean
Member Since: May 2009
Location: Indiana
Posts: 8,131
Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Thanks: 205
Thanked 1,596 Times in 1,481 Posts


Default Re: Exposed Screen Not Washing Out.

Something isn't right. What kind of glass. With chroma blue and that bulb, if it's the one I recomended you should be way under 1:00. Also what's your humidity. Get a cheap weather station with a remote sensor. I know what humidity is in shop vs the dry box. Usally sticking is due to the stencil still being too moist. It also can be heat but at 25" shouldn't be a issue.

If your above 40% it's humidity and will retard the exposure. So 1 screen if it's dry 40% or lower will expose much faster then one that's at 50% humidity.

Photopolymer emulsion will even reassorb moisture. Diazo will also but not easily.
csok likes this.
__________________
"Expecting the world to be fair just cause you are fair to them is like expecting a lion not to eat you just cause you don't eat lion"
 
The Following User Says Thank You to sben763 For This Useful Post:
csok (May 11th, 2015)
Old May 11th, 2015 May 11, 2015 3:51:51 PM -   #6 (permalink)
Senior Member
T-Shirt Mogul


Printor's Avatar
 
You can call me: Jay
Member Since: Apr 2015
Location: SoCal
Posts: 1,457
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Thanks: 47
Thanked 209 Times in 201 Posts


Default Re: Exposed Screen Not Washing Out.

Aterthought, do you use a pressure washer or hose to rinse your screens after burning.
 
Old May 11th, 2015 May 11, 2015 7:23:30 PM -   #7 (permalink)
T-Shirt Lover
T-Shirt Fan
Thread Starter

csok's Avatar
 
You can call me: Chad
Member Since: Nov 2008
Location: Washington
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks: 18
Thanked 6 Times in 5 Posts


Default Re: Exposed Screen Not Washing Out.

Quote:
Originally Posted by sben763
Something isn't right. What kind of glass. With chroma blue and that bulb, if it's the one I recomended you should be way under 1:00. Also what's your humidity. Get a cheap weather station with a remote sensor. I know what humidity is in shop vs the dry box. Usally sticking is due to the stencil still being too moist. It also can be heat but at 25" shouldn't be a issue.

If your above 40% it's humidity and will retard the exposure. So 1 screen if it's dry 40% or lower will expose much faster then one that's at 50% humidity.

Photopolymer emulsion will even reassorb moisture. Diazo will also but not easily.
I got the glass used at Habitat for Humanity. I have no idea what the iron content would be.

It's the MH 1000w 10k you recommended.

My shop is in the basement.
The dehumidifier is sitting in the closet with no external drain.
I haven't even checked the humidity level.
I just assumed that after 24 hours it would be dry.

My money is on the humidity level, especially if the photo-polymer emulsion is capable of re-absorbing moisture.

Thank You for the response Sean!!
 
Old May 11th, 2015 May 11, 2015 7:25:20 PM -   #8 (permalink)
T-Shirt Lover
T-Shirt Fan
Thread Starter

csok's Avatar
 
You can call me: Chad
Member Since: Nov 2008
Location: Washington
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks: 18
Thanked 6 Times in 5 Posts


Default Re: Exposed Screen Not Washing Out.

Quote:
Originally Posted by Printor
Aterthought, do you use a pressure washer or hose to rinse your screens after burning.
I am using a hose with a mist and flat spray. I think it may be the humidity level.
 
Old May 11th, 2015 May 11, 2015 7:35:38 PM -   #9 (permalink)
T-Shirt Lover
T-Shirt Fan
Thread Starter

csok's Avatar
 
You can call me: Chad
Member Since: Nov 2008
Location: Washington
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks: 18
Thanked 6 Times in 5 Posts


Default Re: Exposed Screen Not Washing Out.

My glass has the green tint which is indicative of a higher iron content. So, I will get my humidity under control and order another piece of glass.
 
Old May 11th, 2015 May 11, 2015 9:17:36 PM -   #10 (permalink)
TSF Veteran
Certified T-Shirt Junkie

sben763's Avatar
 
You can call me: Sean
Member Since: May 2009
Location: Indiana
Posts: 8,131
Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Thanks: 205
Thanked 1,596 Times in 1,481 Posts


Default Re: Exposed Screen Not Washing Out.

PPG starphire.
__________________
"Expecting the world to be fair just cause you are fair to them is like expecting a lion not to eat you just cause you don't eat lion"
 
Old May 11th, 2015 May 11, 2015 9:44:12 PM -   #11 (permalink)
Senior Member
T-Shirt Mogul


Printor's Avatar
 
You can call me: Jay
Member Since: Apr 2015
Location: SoCal
Posts: 1,457
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Thanks: 47
Thanked 209 Times in 201 Posts


Default Re: Exposed Screen Not Washing Out.

Those screens look like you could have got them with a pressure washer. If your using less than perfect film, you can often over expose a little and rinse with presure. While your fine tuning everything else, you should get a cheap home $100 pressure washer, use the weakest fan tip it comes with, from a distance (2-3') you need one for reclaiming any way. It will take some practice but once you get use to it, you will always do it that way.
 
Old May 12th, 2015 May 12, 2015 10:22:11 AM -   #12 (permalink)
T-Shirt Lover
T-Shirt Fan
Thread Starter

csok's Avatar
 
You can call me: Chad
Member Since: Nov 2008
Location: Washington
Posts: 25
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks: 18
Thanked 6 Times in 5 Posts


Default Re: Exposed Screen Not Washing Out.

sben763 (Sean) I owe you a beer, or a T-shirt!

I burned a successful 110 mesh screen at 1:00 and held all my fine detail.

The humidity was definitely the issue!

The soda glass does not appear to be affecting time enough for me to change, and because it only cost me $20, I think I will stick with it for now.
 






This is a discussion about Exposed Screen Not Washing Out. that was posted in the T shirt Printing Issues section of the forums.

Quick Reply
Type Your Message Below:
Do NOT Post Self Promotional URLs, Advertisements, Sales Offers or Requests. It is against our Forum Guidelines.
Options

Register Now

In order to be able to post messages on the T-Shirt Forums, you must first register.


Please enter your desired user name, your email address and other required details in the form below.

Your username must be between 2 and 16 characters and contain only letters and numbers (no special characters like hyphens, *, ', ~, etc)
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.

A confirmation email will be sent to this address, so please make sure it is accurate and that your email software is set to allow emails from our domain: t-shirtforums.com (sometimes the confirmation email gets accidently filtered into Yahoo/AOL/Hotmail/Gmail spam folders)
.

You won't be able to post until your email address has been confirmed. We take your privacy very seriously. Feel free to review our Privacy Policy in a new window.
Email Address:
First Name
It's nice to be able to be on a "first name" basis with the people you talk to in a forum. This is a totally optional field; if you like being on a first name basis, please enter your first name below :)

Log-in


Thread Tools

Posting Rules

Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Advice needed! Emulsion washing off screen customizzed Screen Printing 5 June 29th, 2015 10:25 PM
HELP!!! Almost All of Screen Washing Out RandaKing84 T shirt Printing Issues 8 April 26th, 2015 05:41 PM
A question on washing out the screen Genie Screen Printing 2 February 17th, 2015 07:50 PM
screen washing out to a hazy extent need help kingacne Screen Printing 3 November 30th, 2014 10:20 PM
Liquid Emulsion exposed on Yudu is washing off dfloriancruz Screen Printing 4 October 17th, 2014 07:01 PM


All times are GMT -8. The time now is 08:30 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 2004-2014 T-ShirtForums.com. All rights reserved.