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3D printed end mill

The latest episode of The Cool Parts Show looks at the intersection of additive manufacturing and machining. In the episode viewable below, co-host Stephanie Hendrixson and I look at a 3D printed end mill made by Guhring using a Markforged metal 3D printer. One of the questions we explore: Is additive manufacturing a competitor or complement to “subtractive” CNC machining? Answer: It is both. Additive manufacturing makes milling better in this case, because it produces a lighter-weight tool with more effective through-tool cooling channels. But additive also competes with machining, because machining is the way this type of tool body would otherwise be made.

Something else about the episode that makes it worth watching: The shop we visit to test this tool is none other than Dan’s Custom Machining, the subject of the cover story of Modern Machine Shop’s August issue. Watch this episode to see Dan and his shop in action.

The Cool Parts Show is the video series from Additive Manufacturing (the other publication I’m a part of) all about end-use parts made via 3D printing. This latest episode begins season 3 of the show. Subscribe to follow the rest of the season and watch the episode here:


  • Drill And Bore With A Face Mill

    Cutting holes by interpolating a face milling cutter may be a better process choice for many rough and even finish boring operations. Software improvements and better cutter designs allow expanding use of the versatile face mill for hole making.

  • Applying Turn-Milling

    Combining a rotating tool with rotating work produces a machining operation that is distinct from standard turning or milling.

  • The 400° Difference

    Cryogenic machining achieves dramatic tool life gains not by flooding the cut, but by refrigerating the tool.