Uni-Ball Paint Marker Pen - Silver - PX-21

The Uni-Ball Paint Marker Pen PX-21 in Silver is a permanent, oil-based marker designed to write o...

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wilkoUni-ball Paint Marker Pen PX-21 - White - Permanent Ink Back to School
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OnBuy.comUni-Ball Px-21 Paint Marker Pen - 0.8-1.2Mm - Gold - Single
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eBayuni PX-21 Paint Marker - Fine Bullet Tip 1.2mm - White
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UK Office DirectUni-Ball Yellow Unipaint Px21 Paint Marker Fine (12 Pack) 124511000
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Office StationeryUni-Ball UniPAINT PX21 Paint Marker Fine Yellow 12 Pack 124511000
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Product Information

Full details

This guide is for anyone looking to understand and effectively use the Uni-Ball Paint Marker Pen PX-21. Ideal for artists, crafters, and professionals needing a permanent marker for various surfaces, it provides durable, waterproof, and fade-proof results. Note that the fine tip is best suited for detailed work and may not be ideal for large-scale coverage.

All features

Model Part NumberPX-21
BrandUni-Ball

Extended Product Information

FAQs

What surfaces can I use the Uni-Ball PX-21 on?

The PX-21 works on a wide variety of surfaces including paper, metal, glass, plastic, wood, and fabric.

Is the ink permanent?

Yes, the ink is permanent, waterproof, and fade-proof.

How do I prime the marker?

Shake the marker well with the cap on, then gently press the nib on a scrap surface until the ink starts to flow.

Can I use this marker for outdoor projects?

Yes, the waterproof and fade-proof properties make it suitable for outdoor use.

How do I store the marker?

Store the marker horizontally with the cap securely closed to prevent it from drying out.

What is the line width of the marker?

The fine tip produces a line between 0.8mm and 1.2mm.

Is the ink heat-resistant?

Yes, the ink is heat-resistant.

Troubleshooting

Marker isn't writing or ink flow is inconsistent.

Shake the marker well and prime the nib by pressing it gently on a scrap surface. Clean the nib with a soft cloth.

Ink appears faded or has poor coverage.

Ensure the surface is clean and dry before use. Apply multiple layers, allowing each layer to dry before applying the next.

Marker dries out quickly.

Ensure the cap is securely closed after each use and store the marker horizontally.

Pros and Cons

Pros

  • Writes on almost any surface.
  • Provides durable, waterproof, and fade-proof results.
  • The fine tip is perfect for detailed work.
  • Oil-based ink ensures excellent adhesion.
  • Heat-resistant ink maintains color integrity.

Cons

  • The fine tip may not be suitable for large areas.
  • Requires proper storage to prevent drying out.

Setup, Compatibility & Care

  1. Preparation: Shake the marker well with the cap on before each use to ensure the ink is mixed properly.
  2. Priming: On a scrap surface, gently press the nib down to start the ink flow. This may require a few attempts.
  3. Surface Compatibility: The PX-21 works on most surfaces, but it's recommended to test on a hidden area first, especially on sensitive materials.
  4. Storage: Store the marker horizontally to prevent the nib from drying out. Ensure the cap is always securely closed when not in use.
  5. Cleaning: Clean the nib with a soft cloth if ink flow becomes inconsistent. Avoid using solvents.
  6. Compatibility: The ink is compatible with most surfaces, but may not be suitable for all types of plastics. Always test first.

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