Uploaded November 2020 | Updated September 2026, 2 weeks ago

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Thread milling 2-56 (1.8 mm) and 4-40 (2.3 mm) holes!

Small holes can be tough to threadmill because smaller tools are more prone to tool deflection and runout. With our threadmilling calculator (good for both imperial and metric values), modeling the threadmills as form tools in Fusion 360, and using the tapping method to dial in the runout, we're able to get a perfect fit on the first try!

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Links for this video

FREE File Download & CAM Samples: bit.ly/2ozRWIM

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Reach us / CNC Info:



Speeds & Feeds: provencut.com

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CNC Resources: nyccnc.com 5 Reasons to Use a Fixture Plate on Your CNC Machine: bit.ly/3sNA4uH