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Additional Lighting for exposure

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Old April 11th, 2019 Apr 11, 2019 12:11:57 PM -   #1 (permalink)
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Default Additional Lighting for exposure

3 Times trying to burn a screen has been a failure. Each time my screen will wash off beautifully, But will blow out only at the bottom portion. I think my light 500 wt is not actually burning the whole area. I added another 500 wt light to the unit to cover the entire area.

1. question do you think the problem is coverage by the single light ?

2. How will the additional 500 wt effect burning time? I was doing 5 minutes with the single bulb

3. Is underexposed make it harder for clean the screen ?
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Old April 17th, 2019 Apr 17, 2019 6:18:07 PM -   #2 (permalink)
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Default Re: Additional Lighting for exposure

Buy a real exposure unit

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Old April 19th, 2019 Apr 19, 2019 10:32:13 AM -   #3 (permalink)
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Default Re: Additional Lighting for exposure

Either as you said the issue is with the light or you apply emulsion unequally (its thicker on the bottom). I started with a homemade exposure unit. It was working perfectly, took a bit longer (4-7min range) than professional powerful exposure units, but very reliable. therefore, either you have to build a better one, but one, but first make sure you apply emulsion uniformly everywhere. Hope this helps.

This is a discussion about Additional Lighting for exposure that was posted in the Screen Printing Equipment section of the forums.

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