910 Series

Tool 910i1609C

The 910i1609C is a 1/4" chamfer mill from the 910 Series, for chamfering and deburring in aluminum. This version has 2 flutes and a 22.5° angle per side, which makes 45° included.

The tool's geometry sets the angle, so every chamfer comes out at the same angle in a single pass, and your Z depth sets the width.
The 0.020" tip has a dished end with its own cutting teeth, so you can blend a bottom cut as you chamfer.
Besides chamfering and deburring, you can take light slotting passes, which leave a V-shaped slot with a 0.020" flat at the bottom.
You clamp a 1/4" shank that Sonic grinds to h6 for precision tool holders and leaves unpolished to help it resist slipping.
TiB2 resists aluminum sticking to the edge, so you can run higher speeds and feeds than with an uncoated tool.
For steel, the 910i1609B is the same tool in AlTiN.