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Beginner mistakes · 5 of 5 · 1 min read

Shop and safety mistakes

Pouring ink and chemicals down the drain

What goes down the drain is regulated by your local wastewater utility. One city’s guidance for screen printers: scrape ink out dry, wipe screens with rags before washing, minimize solvents, and never pour ink down drains. Instead: call your local wastewater utility and ask what applies to you.

No safety data sheets on hand

Employers need a written hazard communication program, safety data sheets for their chemicals, labeled containers and trained employees (OSHA). Ventilate, wear chemical-resistant gloves and eye protection, and store flammables safely.

Quoting without counting screens

Every color in every print location is its own screen, and each flash slows the press. Instead: count screens and flashes before you price a job. See What affects a print price.

Sources for this guide (17)
  1. Avient, Mapping your conveyor dryer (PDF)
  2. Davis International, FAQs
  3. Wilflex (Avient), Ink curing tips (2020, PDF)
  4. Vastex, Mesh information
  5. Catspit Productions, Proper emulsion performance
  6. Chromaline, Causes of pinholes during screen making
  7. Murakami, Emulsion coating tips (PDF)
  8. Screen Printing Magazine, Squeegee consciousness
  9. dot B, Low printing pressure: what is zero point?
  10. Lawson Screen & Digital, Understanding off-contact printing
  11. ScreenPrinting.com, Sizing strategies for large shirt runs
  12. OSHA, Hazard Communication (29 CFR 1910.1200)
  13. NIOSH, Health hazard evaluation 2007-0053-3092 (PDF)
  14. Cedar City, UT, Screen printers best management practices
  15. Printavo, Screen printing pricing
  16. International Coatings, Curing ink with a heat gun
  17. Lawson Screen & Digital, Curing plastisol inks

Ranges are starting points from these sources. When a source and your ink’s tech data sheet disagree, follow the tech data sheet.