Print Varnish Tips: Common Problems & Solutions

Print Varnish Tips: Common Problems & Solutions

Print varnishing might sound like a simple finishing touch to your artwork, but improper application can introduce a host of problems. Fortunately, with some understanding and guidance, you can tackle these issues head-on, ensuring your prints remain protected and visually stunning.

 

Common Print Varnish Problems & Fixes

Varnishing your prints shouldn't introduce bubbles or make them too dark or light. These problems often arise due to incorrect application techniques. Here's a breakdown of common problems and solutions:

  1. Bubbles on the Canvas: This usually happens due to the rapid drying nature of some varnishes or poor atomization when spraying. Ensure you have the right settings on your HVLP gun and that your coating technique is consistent. A vertical-then-horizontal method can help distribute the varnish evenly.

  2. Prints Too Dark or Light: This can result from not testing with an appropriate ICC profile or from overlaying varnish types that aren’t compatible. Always ensure your varnish is suitable for your print type.

 

Special Varnishing Scenarios

  • Varnishing Metal Inkjet Images: Coating dye sublimation on metal isn't generally required as they are robust and resistant. However, if you wish to try, do so with caution and be prepared for trial and error.

  • Stacking Different Varnish Types: While you can apply different sheens on top of each other, consider mixing the varnishes beforehand to achieve your desired effect. Always test before fully committing to a print.

 

Expert Tips for Successful Varnishing

  • Storage: Keep varnished prints in stable conditions to preserve quality long-term.
  • Mixing: Use plastic or metal stirrers—avoid wood as it introduces acids.
  • Custom ICC Profiles: Measure targets without varnish for consistent results.
  • Spraying Technique: Adjust HVLP sprayers for a fine mist, and clean nozzles regularly to prevent clogging.

 

Final Thoughts

Varnishing is an art as much as it is a science. By choosing the right varnish, applying it carefully, and following best practices, you’ll achieve long-lasting, professional-quality results. And if you’re unsure, always reach out to the experts or your varnish supplier for advice.

 

Listen to full Breathing Color podcast here: #AskBC Episode 40: Print Varnish Tips

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