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Industrial quality CNC engraving bits
There is an inherent overlap, and confusion, in the modern stone industry with regard to carving and engraving. Engraving refers to the process of writing characters and fine-finishing operations on stone whereas carving, similar in concept, function, and meaning, refers more to the roughing out of shapes, complicated figures, and sculpturing. In some applications, the distinction is clear, in others it is vague. If you are in the market for engraving tools, you might actually need a carving bit. If you don’t find what you want here, we strongly recommend you peruse our carving tools as well.
Diamond tipped bits for CNC machines to work stone, marble, granite, and ceramics
Professional bits for CNC machines and routers. These bits are used extensively by stone fabricators for engraving, sign-making, etching, lettering, writing, and finishing. They are used in the funerary arts and to produce marble or granite goods.
These tools have a cylindrical shank and are characterized by an orthogonal (90°) or acute-angle (60°, 30°, etc.) or semicircular tip. They are also called V-Carving bits, V-tip tools, Signmaking bits, Writing bits, and Lettering bits.
Depending on this angle, the engraving width increases the deeper you plunge into the material. The ratio of the plunge depth to the engraving width is determined by the angle of the cutting edge of the tip used.
Applications: Stone and marble letters engraving, finishing in tombstones, monuments, and memorials.
Based on the material to be cut, three families of tips are used:
- Carbide tipped tools for marble working. Typically used for engraving, writing, and finishing marble and soft stone materials.
- Electroplated bits. Mainly used for engraving on marble but electroplated bits have diamond specially designed for ceramic and even granite working. It’s the PinkLine model, Test it they are amazing!
- Diamond Polycrystalline tipped bits (PCD tools) for writings and engravings on granite and ceramic.
These tools come with a 10mm cylindrical shank, with different cutting edge angles (30°, 60°, and 90° and others) and with different end tips (rounded-tip, or flat-tip).
Based on this angle, the deeper you dive into the material, the wider the groove width becomes. In other words “the relationship between the depth and width is determined by the angle of the cutting edge”.
Have a look at this drawing that shows different grooves’ width when you change the angle of the diamond tip and its cutting depth: