DANATEE

Hi All,Great info on this forum.Love It....My burn times are longer then what I hear others are burning at.My set up is home made with a 750 watt halogen work lite seperate fan for cooling and 20 inches away from a 1/4 inch piece of glass which I salvaged from a store front.With a 2 coated, 200 mesh screen it takes me 25 minutes to get the correct exposure according to the step guide that I place on the screen.Wash out is fine and I get very good detail but burn time is long.Could my glass be blocking some uv and if so how can I test the glass to tell? Thank you all who answer,and thanks to all who have answered in the past,Gary

 

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13Graphics

The emulsion you're using will effect how long it takes to burn a screen. What are you using?

I use a fast exposing emulsion, and a 500w halogen from 20". My regular time is 10 minutes, and I burned a 2/2 screen for 12:30 with good results. I haven't used an exposure guide, so for all I know I'm underexposing .

You could try taping the exposure guide down good and tight, and burn a screen to see if the glass is effecting the burn time, or pick up a piece of 1/8: from the store for a few bucks to try.

I do want to try a thicker piece of glass myself, the extra weight has got to help with undercutting.

 

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InkedApparel

I use a 500 watt halogen and have been burning for 28 minutes according to my step wedge test......but i was noticing the finer details were filling in.....so I cut 10 minutes off the exposure time...and what a difference..... it depends were under the light you are placing the step test.....dirrectly under the light will give different result than out on the edge of the screen...I did a few tests with a newly coated screen ......I put 3 step tests on the screen in different places...one directly under the light ...and the other one a little farther out...and the last even farther out......they all had different results.....

the one directly under the light was perfect solid 7 at 18 minutes.....the other two were a solid 5 and a solid 3 ....keep that in mind....

Inked

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DANATEE

Hi,forgot to say I am using a dual cure diazo emulsion.My step guide has always been away from image area,I'll try bringing it closer to center and see if I can cut my time down.Just don't have the money for a pro unit with this economy being so screwed up.Thanks for the replys ,,Gary

 

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