Is it possible that a slight heating during grinding could be a net positive? Some of the defect/negative flavors and gaseous chemicals may be more volatile in a slightly warmed environment than the desired/positive ones.
Titan Grinder Project: Does burr heating coffee grounds negatively affect taste of espresso? - Page 3
Grinders are one of the keys to exceptional espresso. Discuss them here.
LMWDP #167 "with coffee we create with wine we celebrate"