Vincent CNC Finger Bit – 23 mm, 1/2 Gas

The Vincent CNC Finger Bit is a 0.91 in. (23 mm) CNC shaft milling cutter — a finger bit for cutting sink and cooktop openings and inside radii on technical ceramics and Dekton.

Spindle speed: 4,800–5,500 RPM
Feed rate: 10–12 in./min (250–300 mm/min)

Diameter: 0.91 in. (23 mm) · Fitting: 1/2 in. Gas

Key Features

• Vincent publishes 4,800–5,500 RPM at 10–12 in./min (250–300 mm/min) for this bit on technical ceramics and Dekton.
• Vincent's standing instruction for ceramic slab: reduce the feed rate by 40% entering and exiting the material. That one change is what prevents entry chipping on Dekton.
• 1/2 in. Gas fitting, so it runs in the same holders as the rest of the Vincent 1/2 in. Gas range.

Who Is This For

A fabricator cutting openings on a CNC in a high-production shop, where the bit runs in unattended cycles and a wrong feed rate is not noticed until the segment is gone.

It is not a profiling tool and not a polisher — it opens and shapes, and leaves a ground surface. The edge of the opening is finished afterwards with the profile set or by hand.

This is the CERAM bit. Vincent lists a separate range for granite and engineered stone; the bonds are not interchangeable.

Frequently Asked Questions

What speed and feed does Vincent publish for this bit?
4,800–5,500 RPM at 10–12 in./min (250–300 mm/min).

What does it fit?
A 1/2 in. Gas tool holder.

Anything special for ceramic slab?
Yes — Vincent asks for a 40% reduction in feed rate when entering and exiting the material. Entry and exit is where ceramic chips.

Is it a drill?
No. It is a side-cutting milling tool. Plunge it and you load the end face, which is not where the diamond is meant to work; drop in with a ramp or start from a cored hole.