Does a Shochet need to have his knife checked by a Rabbi? If not, why not?
Mishneh Torah, Talmud Torah, 6:14 lists 24 reasons for excommunication. # 20 is:
טַבָּח שֶׁלֹּא בָּדַק סַכִּינוֹ לִפְנֵי חָכָם
A Shochet who does not have his knife checked by a wise man.
(generally translated as a Rabbi)
I know I heard somewhere recently that nowadays most Shochetim check their own knives. Is that true? If so, what is the basis for it?