Bosch PRO V-Groove Router Bit, 90°, Ø16 mm, 8 mm Shank, 2608628407

Bosch PRO V-Groove Router Bit, 90°, Ø16 mm, 8 mm Shank, 2608628407

Bosch 2608628407 is a V-groove router bit from the PRO range with a 90° angle, 16 mm diameter, 15.7 mm working length and a cylindrical 8 mm shank. The cutting edges are tungsten carbide (HW) and maximum speed is 35,000 rpm.

What a V-groove bit does

The bit cuts a groove with a V-shaped section - two sloping walls meeting at a sharp angle. At 90°, each wall sits at 45° to the surface. That profile is used for:

• Decorative grooves in panels and cabinet fronts - a row of parallel V-lines creating relief.
• Engraving lettering - a V-bit gives a line whose width varies with depth, which is what produces the characteristic carved typeface.
• Folding at 90° - a V-groove cut into the back of a panel lets it fold to an exact right angle and be glued into a box or corner.

Carbide cutting edges

The edges are tungsten carbide (HW). In routing, unlike sawing, the cutting edge is in continuous contact with the material - steel goes blunt in minutes in chipboard and glued panel. Carbide holds up and gives clean, precise cuts throughout its life. The edge geometry is improved against kickback, which on a hand-held router is no formality.

Laser markings

The body carries the technical data and the minimum insertion depth into the collet in laser marking. The second is genuinely useful: a bit not seated deep enough pulls out under load, while one pushed in too far bottoms out in the collet and never clamps properly. The marking removes the guesswork.

Compatibility

The shank is cylindrical 8 mm and fits plunge routers and trim routers with an 8 mm collet. The machine's speed must be below 35,000 rpm - at 16 mm diameter, most routers run comfortably at a mid setting.

Working with a V-bit

A V-bit has a quirk that sets it apart from a straight bit: groove width is set by depth. The same cutter draws a thin line shallow and a wide channel deep - so the depth setting decides the whole look of the result, and it is worth trying on an offcut of the same material first.

The second quirk is feed rate. On a V profile the tip moves slowly while the rim moves fast, because the two sit at different radii from the axis. Feed too quickly and the tip burns the material while the outer edges are still cutting cleanly. Work at a steady, moderate feed, and take a deep groove in two passes rather than one.

Technical specifications

Questions and Answers