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Full-Color Friday: DIY edition

This week a recipe, of sorts, in honor of the arrival of some new friends- Process Yellow, Process Cyan & Process Magenta! Oh! how excited we are to meet you!
And how lucky we are to have Kyla here to give us a formal introduction:
Color Separation
for Silkscreen in Photoshop

Kyla Luedtke

Open Photoshop and open your image.

Under Image>Image Size choose the size that you want to print your final image. Be sure that the “constrain proportions” box is checked.

Go to image/mode/ cmyk

Adjust contrast/edit image as desired by going to Image>Adjustments

At this point, make sure that your image is flattened by going to Layers> Flatten Image

Go to Window>Channels: Click on small arrow in the right of the channels box, scroll down to “split channels”

This creates a separate document for each color.

Convert each channel: Go to Image>Mode>Bitmap and choose “diffusion dither” and make the “output” 110 dpi or lower. You are encouraged, however, to experiment at this point. Have fun. Try choosing a lower out put, say 5, see what it does. Try one of the other types of bitmaps, such as half tone screen, or pattern dither…

Print each document out using one of the following methods:

-From a laser printer in black and white on “photo/best” printer mode (highest density) print each stencil onto acetate twice using a laser printer. You can then double up each duplicate stencil for a denser image.

-From an ink jet printer, print each stencil on to inkjet vellum (only one sheet). Each printer is different, so adjust settings as appropriate to get the darkest stencil as possible. Often, you can increase the ink density by going to the “paper type” page in your printer driver, and choosing to increase the ink density there. Overlapping vellum can create a week stencil, so don’t layer up.

-For a detailed image, do the same as described for ink jet vellum only use ink jet transparencies, located in the “school supplies” section of office stores.

-For a large-scale image, you can either separate the image and print it out in tiled pieces, or, if it doesn’t have too much detail, you can have it printed large scale on a laser printer (at a copy shop) and then use baby oil or vegetable oil the paper.

-Lastly, you can print your stencils onto regular paper and then have them photo copied, twice each, onto acetate. If you supply your own acetate, sometimes copy stores will charge a lot less for transparencies.

When screen printing mix each color with 90% transparent base and print in the following order: cmyk (cyan, magenta, yellow, black.) Be sure to use the buckets labeled “process cyan, process magenta, process yellow” and regular ol’ black if you want an accurate color separation.

Kyla is currently here at WSW working on an artists book project. You can see her work in blazing full-color online at www.Kyla-Zoe.com

This recipe, and many others, can be found in Art, Life, Food, Potluck Recipes from Women’s Studio Workshop

A collaborative project that is part cookbook, part artists’ book, and part archive. Former WSW interns, as well as the four founders, were invited to submit recipes for food, studio projects, and life. Sixty-eight recipes from 39 artists are silk screened and digitally printed in this amazing collection. Both beautiful and functional, it is spiral bound for ease of use.

Art, Life, Food is available for $39 at WSW, call 845.658.9133 to order your copy today! or go to our online gift shop to order.

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