Flat-bottomed knife

What's the biggest setback in the workshop?

It's not rising raw material costs or tight deadlines—it's choosing the wrong milling cutter.

Chipping during hard material machining, rework due to subpar surface finish, frequent tool changes delaying production—all add up to thousands of extra dollars in tooling costs each month, without boosting output!

Especially when machining high-hardness materials (HRC 55+), where carbon steel, stainless steel, and high-temperature alloys take turns challenging your tools—ordinary milling cutters simply can't handle the load.

The cutting edge geometry of a milling cutter determines its suitability for specific applications. Choosing the right one doubles efficiency; mismatching leads to constant chipping and rework.

The flat-bottomed knife—the perfect tool for you!

What makes it stand out?

Its 90° right-angle cutting edge features a sharp, unrounded tip and a flat base. This design maximizes contact area during cutting and ensures smooth chip evacuation, making it ideal for large-area machining like a “flat-bladed shovel.”

What applications does it suit?

• Basic flat milling: Suitable for rough and finish milling of common steels like 45 steel and Q235. For example, a hardware factory machined flanges with a φ10mm carbide flat-bottom cutter at 2000 rpm and 0.2 mm/r feed rate, achieving 80 parts per tool—three times the efficiency of standard high-speed steel cutters.

• Step and groove machining: Processing stepped surfaces on mold templates and rectangular grooves on parts. Combined with constant-height milling programming, it ensures step height differences ≤0.01mm.

• Non-metallic machining: Flat-bottom knife tools can perform flat cutting on acrylic and engineering plastics. Dry cutting achieves a surface finish of Ra1.6μm without coolant.

A friendly reminder

• The tool tip is the weak point of flat-bottom knife tools. Avoid interrupted cutting on materials harder than HRC 50+, as this may cause chipping.

• When machining deep grooves, select models with chip evacuation slots to prevent clogging and tool jamming.