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Leg adjustment mechanism

Posted: Mon Jan 29, 2018 4:26 pm
by rogerogrant
Hey y'all!

Can anyone describe to me how adjustable legs are designed?

Image

Like, obviously it's some sort of friction lock, but what exactly is under the knurled bit? Is it a collet of some sort? Are the threads in the knurled bit tapered to apply pressure as it's tightened?

Thanks!

-pt