How sawdust is manufactured - GIFs

[CharlesWaugh]

It's curious that on the wide paint brush handle routing machine they are doing a conventional cut (cutter running against the rotation fo the tool).
You can even see the handle splinter on the outfeed end of one of the cuts.

The two-sided copy-shaper shown in the last video is climb-cutting both sides (one spindle is running in left hand rotation).

Having been a woodworking engineer for 20 years, I notice these things...