Diamond Mounted Point SPHERICAL CONCAVE Head Grinding Bit 3-19mm Grit 400 Jade Carving Tools
Product Name: Gemstone carving tools, Diamond carving burrs, Jade carving tools, Diamond grinding bit Spherical Concave head
Head Shape: Spherical Concave Head
Grit:400 Fine
Please choose from the menu which option best qualifies your need. Available Head Diameter as below:
When you need to grind what diameter ball, please choose the same outer diameter of spherical concave head grinding bit
Such as: If you choose 10mm outer diameter of spherical concave head grinding bit, then you can grinding a 10mm outer diameter ball.
| Outer Diameter | Internal Diameter | Shank diameter | Total length |
| 3mm(close to 1/8") | 2.5mm | 3mm | 50mm |
| 3.5mm(close to 1/8") | 3mm | 3.5mm | 50mm |
| 4mm(close to 5/32") | 3.5mm | 4mm | 50mm |
| 4.5mm(small than 3/16") | 4mm | 4.5mm | 50mm |
| 5mm(close to 3/16") | 4.5mm | 5mm | 50mm |
| 5.5mm(close to 7/32") | 4.8mm | 5.5mm | 50mm |
| 6mm(close to 1/4") | 5mm | 6mm | 50mm |
| 6.5mm(close to 1/4") | 5.5mm | 6mm | 50mm |
| 7mm(close to 9/32") | 6mm | 6mm | 50mm |
| 7.5mm(close to 19/64") | 6.5mm | 6mm | 50mm |
| 8mm(close to 5/16") | 6.8mm | 6mm | 50mm |
| 8.5mm(close to 21/64") | 7.3mm | 6mm | 50mm |
| 9mm(close to 11/32") | 7.8mm | 6mm | 50mm |
| 10mm (close to 3/8") | 8.5mm | 6-8mm | 51mm |
| 11mm(7/16" ) | 9mm | 6-8mm | 51mm |
| 12mm(15/32") | 10mm | 6-8mm | 51mm |
| 13mm(close to1/2") | 11mm | 6-8mm | 51mm |
| 14mm(9/16" ) | 12mm | 6-8mm | 51mm |
| 15mm (19/32" ) | 13mm | 6-8mm | 51mm |
| 16mm(5/8" ) | 14mm | 6-8mm | 51mm |
| 17mm(43/64" ) | 15mm | 6-8mm | 51mm |
| 18mm(23/32" ) | 16mm | 6-8mm | 51mm |
| 19mm(close to 3/4") | 17mm | 6-8mm | 51mm |
Head Shape: Spherical Concave Head
Product use:
Apply to jade carving, stone carving, bone carving, glass carving etc. Especially suitable for forming and grinding spherical bead, etc.
Used for sculpturing, precision grinding in precious stone, ceramic, glass, many the abrasive materials
The speed of 2000-3000 r/min
The Diamond grinding head can be installed on the Bench drilling machine, hand electric drill (not included here). Never use drills while machine is in hammer action.
Use with water as a lubricant.
Note: carving must use cold water to cool the workpiece and the grinding head polishing, moment also can’t do without water
The Grinding Bit have 80 Grit Coarse.
Regular Air postage from China to United States is takes 15-35 days delivery to your home
We will send out your order within 1-2 days after payment has been received and cleared.