1/4'' Downcut Ballnose - 1/4'' Shank - BN-25DC

This 1/4” Down-Cut Ball Nose Bit is perfect for smooth 3D carving, fine details, and cutting out maze-style projects. The down-cut design helps keep the top surface clean with less tear-out, so parts come off the CNC looking finished with minimal sanding. It’s an easy, reliable bit for signs, decorative work, and maze games like our August 2025 CIC Workshop Maze Game Kit. 

Recommended Companion Bit - 1/4"Upcut Ballnose (Click Here)

Recommended Feeds & Speeds 

• Hobby CNC with Router -  60 IPM
• Hobby CNC with Spindle - 90 IPM
• Industrial CNC -  180 IPM
• Cut Depth Per Pass - .25" 
• RPM's - 18,000
• Plunge Rate = 50% of Feedrate (ex: Feedrate=100 IPM, Plunge Rate=50 IPM)
• These Feedrates are recommended starting points, each CNC is different and feedrates will vary.

Bit Info

• Diameter: 1/4''
• Rotation: Downcut
• Cutting Height: 1''
• Shank Size: 1/4''
• Flutes: 2
• Overall Length: 2 1/2''
• Material: Solid Carbide
• Part #: BN-25DC