Additive manufacturing - GIF

[PJs]

At first glance I agree with Frank that its AI generated. Then after watching it several times I noticed the ridge shadow line at the upper edge of the laser beam disappears as it rotates?...as I'm not sure it is rotating in a chuck as the chuck doesn't seem to move¿...or the laser is rotating. Then I manually slid the playback button backwards slowly and it looks more like additive manufacturing.

We've seen a lot of these mirrored gifs here on HMT but they also indicate some form of fakery. Additive manufacturing means adding material like a 3D printer starting from a base and adding material. Rolls Royce pioneered this way back on some of their aircraft engine turbines blades. However there is subtractive manufacturing as well, basically in CNC, lathe, mills etc. but sometimes done with Lasers.

That said I'm not discounting hemmjo's observation and in-depth rabbit holing, of being laser surface hardening...but the one thing that typically happens is the material has a bluish tinge after the laser passes by. I just don't see that in this video.

My gut still tells me something is off with this Gif! As in the laser or chuck being rotated?, or sliding the playbar backwards slowly make a case for additive but not seeing where the additional material is coming from and no splatter...and then there is the disappearing shadow at the top of the beam??

Who's Knows...Only the Shadow Knows.

Another thing leaning toward subtractive manufacturing are the threaded hole lands that go the laser area are partially missing on the 12 O'clock hole...as it rotates in the chuck (you can see the background change) toward the second threaded hole the land exists on it! My bet as the laser goes by the 2nd hole it will remove the land.

Over all it's very misleading title and confusing videography...Gifization of stills and my bet goes back to Frank...it's AI fakery. Ad Nauseam, adhuc nullum pax.