Uni Posca Wax Pastels - Set of 12

Uni POSCA professional grade art pastels feature a unique formula containing more wax than oil, re...

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Hobbycraft Trading LtdUni-Ball Posca Essential Wax Pastels 12 Pack 23X12x1cm
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Product Information

Full details

The Uni Posca Wax Pastels (Set of 12) are designed for professional artists and hobbyists who require vibrant, smooth-applying color for multi-surface projects. These pastels deliver high-coverage pigment with minimal residue, making them an excellent choice for clean layering and blending techniques. While they offer exceptional versatility across materials like glass, fabric, and wood, users should note that they function best when treated as a specialized wax-based medium, requiring careful handling to prevent unwanted smudging before final fixation.

All features

Model Part Number238212671
BrandUni

Extended Product Information

FAQs

Can these be used with water?

These are wax-based, not water-soluble. They do not react like watercolor crayons and are intended for dry application.

What colors are included in the set of 12?

The set includes white, yellow, bright yellow, red, pink, violet, blue, sky blue, apple green, green, dark brown, and black.

Are these safe for children?

These are professional-grade art materials; while they are non-toxic, they are designed for artistic use rather than children's play.

How do I sharpen them?

You can use a standard manual pencil sharpener or carefully shave the tip with a craft blade.

Can I use these on canvas?

Yes, they work very well on fabric and primed canvas, providing excellent coverage and vibrant color.

Troubleshooting

Pastel tip is breaking during sharpening

Ensure the pastel is at room temperature; if it is too cold, the wax becomes brittle, and if it is too warm, it becomes too soft. Use a slow, gentle twisting motion.

Color is not adhering to the surface

Check if the surface is too glossy or oily. Clean the substrate with a mild solvent or ensure it is primed with a toothy surface like pastel board or textured paper.

Pros and Cons

Pros

  • Vibrant, highly pigmented colors
  • Extremely smooth application
  • Works on non-traditional surfaces like glass and fabric
  • Minimal dust and residue
  • Easy to sharpen for fine detail

Cons

  • Limited set size of 12 colors
  • Requires proper storage to prevent wax softening in high heat
  • May require fixative on slick surfaces to prevent rubbing

Setup, Compatibility & Care

To ensure the longevity of your Uni Posca Wax Pastels, keep them stored in a cool, dry place away from direct sunlight, as the high wax content can soften in extreme temperatures. When working on slick surfaces like glass or treated wood, ensure the area is cleaned of oils or dust prior to application to maximize adhesion.

When sharpening, use a manual pencil sharpener with sharp blades to avoid fracturing the wax core. For cleaning, residue can generally be wiped away with a dry cloth from non-porous surfaces, while permanent art on paper should be protected with a high-quality artist's fixative spray.

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