Uploaded June 2026 | Updated September 2026, 3 weeks ago

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We pushed Kennametal's Harvi II TE end mill to the limit in STEEL with aggressive machining strategies that most machinists wouldn't dare attempt.
Instead of replacing the tool, we're putting the exact same cutter back in our YCM C10's spindle to see just how much life it has left. Will it survive?

Check out the Harvi II TE from Kennametal here:
titansofcnc.com/collections/harvi-ii-te-5-flute-solid-end-mills?page=1

For more information on YCM machines:
titansofcnc.com/collections/ycm

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boombastic.titansofcnc.com/boom26

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00:00 Harvi II TE Round 2 – Can This Endmill Keep Going?
00:30 Helical Milling Challenge – 32 Tight-Radius Entries in 1018 Steel
02:22 Full Slotting Test – Four Deep Slots, One Tool
03:50 Extreme Dynamic Milling – 3×D Depth with 80% Stepover
06:32 Boombastic 2026 – The Greatest Machining Show on Earth
06:58 Conventional Dynamic Milling – Proving the Tool Still Performs
09:53 Tool Inspection & Results – What Should We Cut Next?

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