How Many Passes Should You Use for a Base (Underbase) Print?

Understanding Base Print Passes

When printing a base layer, efficiency and quality are key. In most cases, one pass is sufficient, especially when using an automatic press, as it ensures consistent pressure, speed, and ink coverage.

However, achieving the best results depends on factors such as screen mesh, squeegee type, etc. If the base print isn’t laying down properly in a single pass, there are adjustments you can make before resorting to multiple strokes.

Adjustments for a Proper Base Print

1. Use a Sharp Squeegee Blade

• A sharp edge helps shear the ink cleanly through the screen, reducing the need for multiple passes. A 70 Durometer blade at an angle of 65 - 75 is a good place to start, adjust as needed.
• A dull or rounded blade can cause excess ink deposit and uneven coverage.

2. Check Your Screen Mesh

• A 160 - 230 mesh count is common for base prints, but the ink type and garment fabric can influence the ideal mesh selection.
• Ensure the screen is properly tensioned for consistent ink deposit. Learn more…

3. Double-Stroke If Necessary

• If one pass isn’t providing full coverage, a double stroke (without flooding in between) may be needed.

Final Considerations

For optimal efficiency, always start with a single pass and fine-tune your settings before adding extra strokes. Over-depositing ink can impact drying times, print feel, and registration. Proper screen setup and squeegee selection can reduce the need for multiple strokes, leading to a cleaner and more efficient print process.