Workholding with compacted chips/dust?

I am blown away by a recent revelation over at the Facebook group: people use downcut endmills in wood without dust extraction nor workholding, and let the compact chips/dust hold the workpiece in place??

I saw some videos and do believe it is possible, but this seems incredibly sketchy!

This sounds like madness and an inevitable disaster, but apparently more people than I expected use this method. I am in disbelief. Am I in the minority here?

That’s kooky-talk! I agree it’s a disaster waiting to happen…

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It is true that down forces are acting on the work piece but there are side forces at play as well. Maybe it works for them but I would not want to be babysitting a project with no clamps or other workholding. I value all my extremities and eyes too much to try a down cut with no clamping. Maybe tape and super glue but just sitting on the wasteboard, no no no. The same for a bunch of shifting chips and/or dust, no no no not for me.

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Yep,

Sounds like a spectator sport to me, place your bets now…

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