Marker uni-ball POSCA PC-8K white — paint-based pigment marker, 8 mm bullet tip

uni-ball POSCA PC-8K white is a paint-based pigment marker with an 8 mm bullet tip designed for opaque coverage on a wide range of surfaces including paper, wood, metal, glass and ceramics. The water-based, lightfast pigment ink provides consistent, smooth lines and strong opacity for highlights, lettering and decorative detailing. After drying the ink remains permanent on many surfaces and can be layered to increase coverage and create solid white areas.

Advantages

The marker delivers high-opacity white pigment that covers darker backgrounds and coloured substrates. Its 8 mm bullet tip produces uniform strokes for lettering, filling and outlining while resisting splintering. The water-based formulation is lightfast and provides dependable colour stability; it dries to a permanent finish on many materials and allows for layering without cracking when used correctly.

Suitable for

• Illustration and mixed-media artwork
• Signage, posters and retail displays
• Crafts, scrapbooking and decorative detailing
• Labeling and marking on non-porous surfaces like glass and metal
• Touch-ups and highlights on painted surfaces and ceramics

Key specifications

• Ink type: water-based pigment ink
• Colour: white, high opacity
• Tip shape and size: 8 mm bullet tip
• Line width: broad/medium strokes suitable for filling and bold lettering
• Finish: opaque, matte to semi-matte when dry
• Compatibility: suitable for paper, wood, metal, glass, ceramics and many painted surfaces
• Layering: compatible with multiple layers for increased opacity

How to use

Shake the marker well before use to mix the pigment. Press the tip gently on a scrap surface to prime the flow until the ink reaches the tip. Apply with steady pressure for even coverage; use short overlapping strokes to fill larger areas and hold the marker at a slight angle for thicker lines. Allow sufficient drying time between layers when building opacity, and cap the marker after use to prevent the tip from drying out.

Usage recommendations

Test the marker on a small, inconspicuous area of the surface first to confirm adhesion and drying behaviour. For non-porous surfaces, wipe clean and dry thoroughly before application. Store horizontally when not in use for prolonged periods and avoid freezing temperatures to maintain ink performance.