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11/08/2026

🎓 Abrasives Academy Lesson 12 Why Hole Patterns Matter?

Those holes in your sanding disc are not random — they are a dust extraction pathway:

The Principle – A vacuum pulls air through the holes in the backing pad. The disc holes must align with the pad holes, or the airflow is blocked entirely.

The Consequence of Misalignment – Dust stays trapped between disc and workpiece, accelerating loading, increasing heat, and leaving a rougher finish.

Multi-Hole Solution – Multi-hole discs have a dense grid of openings that naturally overlaps with most pad hole configurations — no alignment needed.

Key Takeaway: Match your disc hole pattern to your sander's backing pad. A perfectly good disc with blocked holes performs like a clogged one.

What sander brand are you running? How many holes does your pad have?

08/08/2026

OSLONG at MIMS 2026 — Saint Petersburg, Russia

We're excited to announce that OSLONG will be exhibiting at MIMS 2026 Automobility, one of the largest automotive aftermarket events in Russia and CIS region.
📍 Booth No.: Pavilion H, H300
📅 August 25–28, 2026

With over 20 years of experience in professional abrasives manufacturing, we'll be showcasing our latest product lines for automotive finishing and industrial applications.

If you're a distributor, OEM partner, or looking for a reliable abrasive supplier — stop by our booth for a face-to-face conversation and live product samples.

Send us a message or visit our website to learn more: www.oslong-abrasives.com

See you in Saint Petersburg!

06/08/2026

🎓 Abrasives Academy Lesson 11 What Is PSA?

PSA stands for Pressure Sensitive Adhesive — a full-coverage sticky backing on the sanding disc:

How It Works – Peel off the protective liner, press the disc onto the backing pad, and the adhesive bonds across the entire surface. No hooks, no loops.

The Advantage – Zero gap between disc and pad. The disc sits absolutely flat against the sander, eliminating micro-vibrations that can show up in the scratch pattern.

The Trade-off – PSA discs are typically single-use. Once removed, the adhesive loses tack and may leave residue on the pad.

Key Takeaway: PSA is the choice when surface finish flatness is the highest priority — fine finishing, polishing preparation, and precision work.

Is PSA your go-to for finishing, or do you prefer quick-change systems?

04/08/2026

🎓 Abrasives Academy Lesson 10 Hook & Loop Explained

It is a two-part fastening system that replaces glue-based attachment:

Hook Side – Tiny nylon hooks on the backing pad (the tool side). Loop Side – A brushed fabric surface on the back of the sanding disc.

Press them together and they lock instantly. Peel them apart and the disc releases cleanly — no adhesive residue, no waiting.

Key Takeaway: Hook & Loop is designed for speed. Change a disc in seconds, reuse it multiple times, and keep your backing pad clean.

Pro Tip: Excessive heat from heavy sanding can soften the nylon hooks over time. Let the disc cool between aggressive passes.

Does your workshop run Hook & Loop or PSA? Why did you choose it?

30/07/2026

🎓 Abrasives Academy Lesson 08 Wet vs Dry Sanding

The difference is not just water — it's about friction, heat, and surface finish:

Wet Sanding – Water acts as a lubricant and coolant. It continuously flushes debris away from the grain, preventing clogging and reducing heat. Requires a waterproof backing (film or latex-impregnated paper).

Dry Sanding – Removes material faster with no liquid cleanup. Generates more dust and friction heat, but is the standard for most woodworking and metal fabrication applications.

Key Takeaway: Use wet sanding when surface finish and heat control matter most (automotive clear coat, fine finishes). Use dry sanding for speed and convenience in general material removal.

Important: If you're wet sanding, make sure your disc has a waterproof backing — standard paper will disintegrate in water.

28/07/2026

🎓 Abrasives Academy Lesson 09 Why Sandpaper Loads Up?

Loading (clogging) is when debris fills the space between abrasive grains, preventing them from contacting the workpiece:

The Cause – Soft or heat-sensitive materials (primer, paint, resinous wood, aluminum) produce debris that sticks and packs into the grain gaps rather than falling away. The Consequence – Once grains are buried under debris, the disc stops cutting, generates excess friction heat, and can burn the surface or leave an uneven finish. The Solutions – (1) Use an Open Coat disc to leave space for debris escape, (2) Use a Stearate coating to prevent adhesion, (3) Use Mesh discs for full-surface dust extraction.

Key Takeaway: Loading is a physical blockage, not a sign that your abrasive is worn out. The right coating and structure prevent it.

23/07/2026

🎓 Abrasives Academy Lesson 07 Why Film Backing?

Polyester film is not "stronger paper" — it’s a different material with different physics:

Uniform Thickness – Film is produced to a precise micron-level tolerance, allowing every grain to sit at the same height for a highly consistent scratch pattern. Water Resistance – Unlike paper, polyester does not absorb water, keeping the disc flat and stable during wet sanding. Tear Resistance – High tensile strength prevents rips when sanding sharp edges or contoured surfaces.

Key Takeaway: Film backing is engineered for finish consistency and dimensional stability, not just "durability".

Pro Tip: For automotive refinishing (P800 and finer), a film backing is often the standard for achieving a mirror-ready surface.

21/07/2026

🎓 Abrasives Academy Lesson 06 Why Mesh Discs?

Instead of a solid paper backing, Mesh uses a woven net structure:

Full Surface Extraction – Thousands of tiny openings allow dust to pass through the entire disc, not just through specific holes. Universal Alignment – No need to match hole patterns; the net structure works with any backing pad configuration. Heat Dissipation – The open weave allows constant airflow, keeping the grains cool during heavy sanding.

Key Takeaway: Cleaner workshop and cooler sanding through structural ventilation.

14/07/2026

🎓 Abrasives Academy Lesson 05 What Is the Anti-Clogging Coating?

Ever noticed a "powdery" layer on your sandpaper? It’s often a Stearate coating, and it’s there for a reason:

Anti-Loading – Acts like a "non-stick" layer, preventing dust from sticking to the disc and clogging it. Cooler Sanding – It’s a dry lubricant that reduces friction and prevents the surface from burning. Longer Life – Keeps the abrasive sharp and clean for a much longer period.

Key Takeaway: If you’re sanding paint, primer, or soft wood, an anti-clogging coating is essential to keep you moving.

Pro Tip: OSLONG uses high-grade Zinc Stearate to ensure it won't leave any residue that causes paint defects (like fish-eyes).

Address

78 Lvyou Road, Zhongkeng Ind. Zone, Shipai Town, Guangdong
Dongguan
523000

Website

https://www.oslong-abrasives.com/

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