Double Edged CNC Milling Cutters Straight Groove Pointed Knife Cutting Tool

Cutting deep relief in hardwood without snapping the point? The CUT027 double edged straight groove pointed knife is ground for that pass. Two straight flutes share the load, the point comes in R0.5 or R1.0, full angle in 10°, 15°, 20°, shank 6 mm or 8 mm, overall length 60 / 70 / 80 / 100 mm. Alloy body, listed for hardwood, imported mahogany, hard bamboo and artificial stone. It fits CNC routers, engraving machines and automatic carving centres; price is quoted against the radius, angle, shank, length and quantity.

A shop cutting deep relief panels runs into the same three things: a point that snaps on the first full-depth pass, a groove wall that scorches because chips cannot clear, and a carving that still needs sanding before stain. The CUT027 is built to remove all three.

It is a double edged straight groove pointed knife for CNC routers, engraving machines and automatic carving centres. Two straight flutes cut on both sides of the axis, so the side load on the shank is split instead of carried by one edge, and the point stops wandering at depth. The tip is ground in R0.5 for fine lettering or R1.0 for a deeper cut; the body is alloy.

Full angle is 10°, 15° or 20°. A 10° point enters dense stock with the least push-back, 15° sits between the two, and 20° holds its edge in abrasive stock such as artificial stone. Shank diameter is 6 mm or 8 mm, total length 60 / 70 / 80 / 100 mm — the reach from collet to point.

Length decides whether the knife clears the blank: 60 mm for shallow panels, 100 mm for a relief below the bed line. Both flutes are straight and both ground, so the knife cuts climb or conventional. Customisation is supported: a drawing or a sample is ground to instead of the four catalogue lengths.

Two flutes, one pointed tip and five numbers are what separate this knife from a single-edge pointed bit:

• Two straight flutes — both edges cut, so the side load of a pass is shared by 2 edges instead of one.
• Pointed tip in R0.5 or R1.0 — R0.5 for fine lettering and detail, R1.0 for a full-depth cut.
• Three full angles — 10°, 15° and 20° cover dense hardwood, mixed work and abrasive stock.
• 6 mm or 8 mm shank — the two collet sizes on CNC routers, engraving machines and carving centres.
• Four total lengths — 60, 70, 80, 100 mm, so reach is chosen by panel depth.
• Alloy body — the wear part named on the listing, ground to the same tip geometry across all four lengths.
• Difficult to break — that is the feature the listing leads with; the double edge and straight groove are why.
• Straight groove chip path — chips leave along a straight flute instead of being pressed back into the groove wall.
• Machine fit — CNC routers, engraving machines and automatic carving centres; fitment is checked at the collet.
• Custom geometry — grinding to a drawing or sample is supported, not limited to the sizes listed.

The choice is usually a single-edge pointed bit that snaps every few panels, or sending the relief work out. This knife sits between those two:

• Fewer broken points per shift. 2 cutting edges and a straight groove take the load one edge would take alone, so a full-depth pass becomes a normal cut.
• One knife covers detail and depth. R0.5 and R1.0 on the same knife family means fine lettering and deep relief come out of one spare drawer, not two suppliers.
• The angle is picked to the material. 10° for dense imported mahogany, 20° for artificial stone and hard bamboo — the point that suits the stock is ordered, not compromised.
• It fits the spindle you already run. 6 mm and 8 mm shanks cover the collets on most CNC routers and engraving machines, so no adapter is added to the setup.
• Reach without a second setup. 100 mm overall length reaches a relief that sits below the bed line, where a 60 mm knife stops at the collet.
• Climb or conventional on the same edge. 2 straight ground flutes cut in either direction, so the toolpath is not rewritten for the finish pass.
• The same geometry on the next order. Grinding to a drawing or a sample is supported, so a profile that ran well can be repeated.

Hardwood, imported mahogany, hard solid wood, hard bamboo and artificial stone. Those are the materials named on the listing, and the R0.5 / R1.0 tips plus the 10°–20° angles are what let one knife family cover them without a second tool.

It is listed as difficult to break, and that is the point of the design. Two straight flutes cut on both sides of the axis, so the sideways load that usually kills a pointed bit is shared instead of concentrated on one edge.

R0.5 for fine lettering and tight detail, R1.0 when the point has to go deep. The bigger radius leaves a slightly rounder bottom in the groove and puts more material behind the tip, which is the stronger of the two in a full-depth cut.

How hard the point pushes into the stock and how much edge sits behind it. 10° enters dense wood with the least resistance, 20° carries the most material behind the point and suits abrasive stock such as artificial stone, and 15° is the middle setting for mixed jobs.

It fits if the collet takes a 6 mm or 8 mm shank, which covers the collets on CNC routers, engraving machines and automatic carving centres. Check the collet size and the reach you need before choosing between the 60 / 70 / 80 / 100 mm lengths.

It has 2 cutting edges in a straight groove and both are ground, where a standard pointed bit usually cuts on one edge. The second edge is what balances the cut, and the straight groove is what lets chips leave instead of being driven into the wall.

Yes — customisation is supported. Send a drawing, a sample or the cutting conditions and the tip radius, full angle, shank and length are ground to that instead of the four catalogue lengths.

Contact us with the tip radius, full angle, shank diameter, length and quantity, and the price is quoted against that combination. The listing carries contact-us-for-a-quote rather than a fixed figure, because each knife is ground to the size ordered.