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Coarse grit diamond tools don't get much attention.
Everyone talks about fine polishing and mirror finishes. But sometimes, you need the opposite.
Sometimes you need to:
Grind down a tough sintered stone slab
Remove deep saw marks
Create a rough, textured surface for grip and safety
Prepare a surface for coating
For these jobs, you need aggressive material removal. You need coarse grit. You need diamond.
Enter the brazed diamond grinding stick with 30/35 grit.
This humble tool does two important jobs:
Grinds sintered stone slabs – fast, efficient, and cool
Creates high-friction / anti-slip surfaces – for safety and grip
In this article, we'll explore both applications – and explain why brazed diamond technology is the best choice for coarse grinding work.
A grinding stick is a simple but essential tool – a rectangular or strip-shaped abrasive tool that mounts on various grinding equipment.
Brazed diamond uses a high-temperature chemical bonding process (nickel-chromium alloy) to attach diamond grains directly to the steel substrate.
| Feature | Benefit |
|---|---|
| High grain exposure | Diamond stands tall – aggressive cutting |
| Chemical bond | No grain pull-out – long life |
| Sharp cutting | Low grinding force – less heat |
| Open structure | Chips fall away – no loading |
| Grit | Particle Size | Cut Rate | Finish | Best For |
|---|---|---|---|---|
| 30/35 | ~500-600 µm | ⭐⭐⭐⭐⭐ Very aggressive | Very rough | Heavy stock removal, texturing |
| 60/80 | ~200-250 µm | ⭐⭐⭐⭐ Aggressive | Medium | General grinding |
| 120/140 | ~100-120 µm | ⭐⭐⭐ Moderate | Smooth | Finishing |
30/35 is for when you want to REMOVE MATERIAL FAST.
Sintered stone – porcelain slabs, quartz, engineered stone – is extremely hard.
| Material | Hardness | Challenge |
|---|---|---|
| Sintered stone slabs | Very hard (Mohs 7-9) | Conventional abrasives wear quickly |
| Porcelain slabs | Hard, dense | Requires diamond abrasive |
| Quartz / engineered stone | Hard, resin-bonded | Heat-sensitive – needs cool grinding |
| Operation | Description |
|---|---|
| Surface grinding | Smoothing and leveling slab surfaces |
| Edge grinding | Shaping and finishing edges |
| Saw mark removal | Eliminating marks from diamond cutting |
| Surface preparation | Preparing for polishing or coating |
| Heavy stock removal | Removing excess material |
| Feature | Benefit |
|---|---|
| Aggressive cutting | Fast material removal – higher productivity |
| Cool operation | Prevents heat damage to resin-bonded stone |
| Long life | Less downtime for tool changes |
| No loading | Stone dust doesn't clog the tool |
| Coarse grit | Removes saw marks quickly |
This is a less obvious but equally important application.
A friction surface is a textured finish that provides grip. The rough texture increases the coefficient of friction – preventing slips, especially in wet or oily conditions.
| Location | Why Grip Matters |
|---|---|
| Wet floors | Prevent falls in bathrooms, pool decks |
| Industrial ramps | Prevent slips in work areas |
|
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