as you walk you put pressure on your sole feet so it turns flat and hardens
feet
Christopher Poole also known as "Sole" as in the sole of your feet.
Skin on the palms of hands and sole of the feet lack hair follicles. Thus there is no hair growth on them.
it means from head to toe. sole is a feet and crown refers a head
sole A opening from where you can slide your feet to wear it.
polar bear
it means you had an itch on the sole of your foot. :)
They are worn on the feet. It protects our sole while walking.
mostly is the hardening done by induction hardening machine, I know also manufactures that do this using the flame hardening method.
in my opinion surface hardening is applied only on the surface while the true hardening is applied in the whole part of the metal....
Same size feet= so-so, big+small= good, big+ tiny= not so good.
what the was on tooth hardening day?