So at least once a week i focus on kicks only to strengthen my shins, it is to the point that i start to loose hair on my shins (yes yes very sexy).

I do so on the heavy bag is there any other way? and i was wondering how do you train shin hardening?
I train six times a day twice on bag twice sparring and free training i.e. shadowboxing/combo's/technique/and shins
three times cardio/powertraining.

Shin hardening i do to kinda numb my nerves and harden my bones (tiny fractures).

Sarah i already do 100
i mean i train six time a week ....
twice on the bag
twice sparring
once free training

and three times a week i do powertraining.

I don't think some understand my question, i don't want to know how and where to kick the opponent but i want to know how to strengthen the shin and how others do it.

About the wooden rolling pin, it sounds unhealthy? ill have to do some research about it.

Thanks for the answers so far.