Diamond Spray
Diamond suspension in a spray applicator, for fast, even, metered charging of polishing cloths. Available in monocrystalline, polycrystalline, and natural grades and multiple micron sizes, in 4 oz and 8 oz bottles: the monocrystalline and natural sprays are supplied water-soluble or oil-soluble, and the polycrystalline spray is supplied ready to spray. Comparable to the diamond sprays from Struers (DP-Spray) and Allied High Tech, typically 20 to 40 percent lower in price. Used across metallography, ceramics, optics, and tool-and-die finishing.
Why Apply Diamond as a Spray
A spray delivers a metered, even dose of diamond to the cloth, so recharging is fast, repeatable, and low-waste compared with hand-applying paste. That consistency matters most on automated and high-throughput polishing, where the cloth is recharged several times through a cycle and dose-to-dose uniformity keeps the cut rate and finish stable across samples.
Diamond Spray Selection
| Type | Cutting Action | Best For | Micron / Carrier |
|---|---|---|---|
| Monocrystalline | Sharp, aggressive, predictable cutting at a high removal rate. | General-purpose polishing of hard, brittle materials. | 1/10–45 micron; water- or oil-soluble |
| Polycrystalline | Self-sharpening; high removal with a finer scratch pattern and less subsurface deformation. | Hard, mixed-phase materials and deformation-sensitive work. | 1/10–15 micron; ready to spray |
| Natural | Tough, traditional crystal for specified procedures. | Established procedures and general finishing. | 1/10–45 micron; water- or oil-soluble |
Choosing the Carrier
On the monocrystalline and natural sprays, choose the water-soluble carrier for automated systems, hydrophilic cloths, and rapid cleanup between steps, and the oil-soluble carrier for reactive metals (magnesium, uranium), longer working time, and controlled lubrication. The polycrystalline spray is supplied ready to spray. Both bottle sizes (4 oz and 8 oz) fit the same micron sequence used for suspensions and pastes, so a spray can drop into an existing 9 → 3 → 1 micron procedure without changing the steps.
Frequently Asked Questions
Why use a spray instead of paste or suspension?
A spray applies a metered, even dose to the cloth, so recharging is fast, consistent, and low-waste. It suits automated and high-throughput polishing where the cloth is recharged often during a cycle and dose uniformity keeps the finish repeatable. Paste is better for manual work; a dispensed suspension is the alternative on automated heads.
Which diamond type and carrier should I choose?
Use monocrystalline for general-purpose sharp cutting, polycrystalline for hard mixed-phase materials, a finer finish, and lower deformation, and natural where a procedure specifies it. On mono and natural, choose water-soluble for automated systems and quick cleanup, oil-soluble for reactive metals and longer working time. The polycrystalline spray comes ready to spray.
What micron size should the spray be?
Match the spray micron size to the polishing step: 9 micron for the first diamond step, 3 micron intermediate, and 1 micron down to 1/10 micron for the final diamond polish. The monocrystalline and natural sprays run to 45 micron for coarser steps; the polycrystalline spray runs to 15 micron.
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