Anything else I can be doing exercise wise for my forearms?

Okay, as I mentioned in an earlier thread I'm training each arm seperately because of a shoulder injury to my right arm.
So, wrt my left arm this is what I'm doing:

Monday - 2.5" crusher/RT, sledge side levers, wrist curls

Thursday - 1HP, sledge front and rear levers, wrist curls

Now my hand, in particular my thumb, is happy with this frequency of workout. Anymore and it starts getting tired and my grip suffers. However, I'm feeling I could be hitting the forearms in between workouts as I understand they can take some working. So, any suggestions for a mainly one armed exercise that isn't going to tire the fingers/thumb too much but hit my forearm (keep it clean , and no, trumpet polishing isn't an option )

Cheers, Lol

Looks like you've probably got it covered mate.

Well I've started doing rotations ala John Brookfield, static holds with rocks. It's all goood and it all helps.