Accurate, Accessible, and Experimental Solar Exposure for Silkscreen

I enjoyed presenting at the MAPC 2020 remote symposium. I’m sharing some of the documents mentioned here.

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Free light meter apps that work well

Apple:​

• Korona https://apps.apple.com/app/apple-store/id1450079523?pt=117916953&ct=refer-a-friend&mt=8 ​

Android:​

• Light Meter for Photo  ​

https://play.google.com/store/apps/details?id=jp.gr.java_conf.appdev.app.exposuremeter ​

These times work with Ulano TZ emulsion while using a sheet of acrylic to hold down positives or protect the screen.

Materials:

Stouffer Step Exposure Calculator- https://screenprintdirect.com/products/step-wedge?variant=28825380519989&currency=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gclid=CjwKCAjwiaX8BRBZEiwAQQxGx0LElO1Nd0xDs51CRKksSD9LXc26HX2n82wGOovFbEC1JlFH-23sihoCxjcQAvD_BwE 

Ulano Fotocoat TZ Emulsion: https://www.dickblick.com/products/ulano-fotocoat-tz-diazo-screen-printing-emulsion/ 

Clear acrylic sheet: https://www.homedepot.com/p/OPTIX-18-in-x-24-in-x-0-093-in-Clear-Acrylic-Sheet-Glass-Replacement-MC-05/202038047?g_store=816&source=shoppingads&locale=en-US 

Clear PETG sheets: https://www.mcmaster.com/petg-sheets/clear-easy-to-form-petg-sheets/ 

Ongoing:

I have started a shared document to map out exposure times across materials and light conditions. Check for your preferred chemistry, or contribute your own test results.

https://docs.google.com/spreadsheets/d/1Gtmfou5DRMdYE3Rqh1lwpurTUIg5a3HcoND_YUfHDz0/edit?usp=sharing