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Old December 16th, 2007, 08:34 PM   #1 (permalink)
brooks brooks is offline
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Default Newbie

Hello everybody, thank you for you time in reading this.
I am a newbie to the trade, with big ambitions, little cash . I am using 255 yellow thread count mesh, a pre-sensitized emulsion called Intech HS emulsion. The print will be of a picture in halftone with 65 lpi at 45 degrees, so detail is high. My question is with burning the image, i plan to use pieces halogen work lights to basically have one work light house two 500 watt halogen bulbs, so one housing 1000watts using 115 watts, the light will be under the image, light going up about 21 inches away from glass. I am wondering what opinions are as to the detail i will achieve using this method.

*note: I am experienced in electrical and carpentry trades, all equipment is safe, the two lights each have their own switch.

Thanks again
-Newbie
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Old January 30th, 2008, 03:58 PM   #2 (permalink)
jr_sanford jr_sanford is offline
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Lightbulb Re: Newbie

First of all, use only ONE light source. Multiple filaments can cause undercutting thus reducing the edges of the stencil.

A 1000 watt halogen bulb about 20 inches from the screen should work well.
Make sure that your bulb compartment is well ventilated.

Use a halftone sample and do a step test at multiple exposure times.
Block the exposure area in steps thus increasing times in those areas that are finally revealed.

J.R.
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