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Milling slots and grooves in glass and ceramics is one of the most challenging operations in hard material machining.
Glass is brittle – it chips and cracks easily
Ceramics are extremely hard – they wear out standard tools quickly
Both generate abrasive dust that clogs conventional Grinding Heads
Standard grinding heads struggle. They load up, generate excessive heat, and wear out prematurely.
But there's a tool specifically designed for this challenge: the sintered diamond grooving / slotting grinding head.
With diamond distributed throughout the working layer and chip evacuation grooves on the surface, this tool delivers consistent, efficient slotting in hard materials.
In this article, we'll explain why this design works, why sintered diamond is the right choice, and how it can improve your grooving operations.
Glass and ceramics are difficult to machine.
| Material | Hardness (Mohs) | Machining Challenge |
|---|---|---|
| Glass | 5-7 | Brittle – chips and cracks easily |
| Ceramics | 7-9 | Extremely hard – wears tools quickly |
| Stone | 5-7 | Abrasive – generates heat and dust |
| Composites | Varies | Can fray or delaminate |
| Problem | Cause | Result |
|---|---|---|
| Clogging | Abrasive dust packs into the tool | Tool stops cutting |
| Overheating | Friction generates heat | Thermal damage to workpiece |
| Rapid wear | Hard materials wear down abrasive | Short tool life |
| Chipping | Dull or wrong tool | Poor edge quality |
| Slow cutting | Inefficient material removal | Low productivity |
| Requirement | Why |
|---|---|
| Be extremely hard | To cut through hard materials |
| Have chip clearance | To prevent clogging from dust |
| Run cool | To prevent thermal damage |
| Maintain sharpness | To ensure consistent results |
This tool combines two key features: sintered diamond abrasive and a grooved / slotted working surface.
| Feature | Benefit |
|---|---|
| Diamond throughout | Long life – no sudden loss of cutting ability |
| Self-sharpening | Fresh diamond exposed as tool wears |
| Metal bond | Strong grain retention – ideal for hard materials |
| Can be dressed | Refresh when needed |
| Feature | Benefit |
|---|---|
| Chip clearance | Debris falls away – no clogging |
| Cooler operation | Air and coolant reach the grinding zone |
| Faster cutting | Interrupted cutting action |
| Self-cleaning | Dust doesn't pack into the tool |
| Feature | Combined Benefit |
|---|---|
| Sintered diamond + grooves | Long life + no clogging + cool cutting + consistent performance |
| Feature | Electroplated | Sintered (This) |
|---|---|---|
| Diamond distribution | Single layer | Throughout working layer |
| Self-sharpening | No | Yes |
| Life | Short |
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