• This undercut end mill is great for all of the same operations as a standard flat end mill, but with other benefits. For hybrid printing and milling operations, the undercut allows vertical sidewalls to be milled from bottom up while leaving a few print layers at the top for the next additive step. For low stiffness setups, the undercut also helps to minimize chatter on deep cuts. The 45 degree angle at the top of the undercut allows for back chamfer operations. This is extremely useful for breaking edges on thru bores and other features on the bottom surface of parts.


    Cutting Diameter: 4mm
    Shank Diameter: 1/8"
    Length of Cut: 4mm
    Flute Length: 5mm
    Back Chamfer Angle: 45 Deg
    Shoulder Diameter: 2.5mm
    Shoulder Length: 25mm
    OAL: 60mm
    No Flutes: 3
    Material: Micrograin Carbide
    Center Cutting: Yes
    Helix Angle: 30 Deg
    Best Used On: Aluminum, Brass, Plastics and Composites

    4mm Undercut Flat End Mill

    SKU: 7121206-4

      Ratings & Reviews

      Need some guidance before purchasing?  We're here to help: