SKU: AXU_ABOB802
- Self-sharpening ceramic grain for faster cutting
- High-density block for controlled, even sanding
- Ideal for flat surfaces and surface levelling
- Electrostatically-aligned grain for optimised cutting efficiency
- Full grain coverage for more cutting points
- Non-stick stearate coating reduces clogging
- Works wet or dry for versatile sanding
- Much longer-lasting performance than aluminium oxide abrasives
Arystox Ceramic Abrasive HD Blocks (four-sided) are a high-performance sanding solution made with advanced abrasive technology for faster preparation, longer life and significant fatigue reduction.
🟣 Self-Sharpening Ceramic Oxide Grain
- Microcrystalline grain structure fractures during use to continuously expose fresh cutting edges, keeping the abrasive sharp for longer
- Delivers a faster cut with less effort compared to traditional aluminium oxide
🟣 High-Density Foam Core
- Firm, high-density construction provides a stable sanding platform for even pressure distribution
- Ideal for flat surfaces such as walls, wood panels, doors and filled areas
- Adapts to curves and corners for optimal block-to-surface contact
🟣 Ergonomic and Durable Block Design
- Comfortable to hold for extended periods, reducing hand fatigue
- Ultra-dense construction – Won’t tear or break apart like standard blocks
- Grain is securely bonded with two coats of resin, minimising loss for long life
🟣 Non-Stick Stearate Coating
- Resists particle build-up and clogging, allowing the abrasive to keep cutting efficiently for longer
- Reduces heat build-up, helping prevent material from sticking, especially when sanding fillers and painted surfaces
- The anti-clog coating removes the need for gaps between grains (commonly found in standard open-coat abrasives), allowing full grain coverage (closed-coat) for more cutting points and faster sanding
🟣 Electrostatically-Aligned Grain
- Unlike conventional abrasives where grains are randomly positioned, the grains are aligned so their sharpest edges face outward
- This means more cutting points are working from the start, delivering a faster, more efficient cut with less pressure
- Produces a more consistent scratch pattern for a smoother, more predictable finish
🟣 Works Wet or Dry
- Suitable for both dry sanding and wet sanding applications
- When used wet, helps reduce airborne dust, control heat and produce a finer, more refined finish
- Wash after use to unclog and extend lifespan
Arystox HD Blocks Usage Guide
🟣 Choose the Right Grit
- P60 – Extra-Coarse
- Rapid removal of old coatings; shaping bare wood; levelling deep gouges, scratches and dents
- P80 – Coarse
- Removing old coatings; correcting significant imperfections; levelling over-filled areas; rust removal
- P120 – Medium
- Removing imperfections; keying surfaces prior to coating; preparing bare wood; smoothing plaster and filler
- P150 – Medium-Fine
- Keying surfaces prior to coating; removing scratches from coarser abrasives; final sanding of filler; preparing bare wood
- P180 – Fine
- Final preparation of bare wood; removal of brush and roller marks; reducing visibility of scratches from coarser abrasives
🟣 Before Use
- 🔍 Inspect the block for dust or debris from previous use to ensure optimal sanding performance
- ✔ Choose the correct grade for the task, working from coarse to fine for a superior finish
- ⚠️ Test on a small area before full application to ensure the desired sanding effect
🟪 Note on Sanding Dust
- Ceramic abrasives may leave a fine purple dust on the surface during use
- These are dry particles of abrasive grain that sit within the surface texture and do not stain
- Always wipe this grain dust off before applying coatings
- For best results, use an Tack Cloth
💜 Maximise Performance
- Whilst the stearate coating reduces clogging during dry sanding, tapping the block periodically to remove dust build-up will maintain peak performance
- For a full clean after use, rinse the block with water to remove embedded dust, then leave to dry for maximum cutting power on the next job
- Rotate the block while sanding to distribute wear evenly and extend its lifespan
- When wet sanding, rinse regularly to unclog
- Replace once cutting performance noticeably reduces
🟣 Pro Tips
- Use even, controlled strokes to maintain a uniform finish
- Use lighter pressure than with aluminium oxide abrasives
- Always work through grits progressively (e.g. P80 → P120 → P150 → P180)
Storage
- Store in a dry, well-ventilated area to maintain abrasive quality
- Keep away from direct sunlight and extreme heat, which can affect the foam backing