Here's my full workout. I've tried supersetting, insane pumps, chest/Bis, back/tris, training arms together...
The ONLY thing that really worked for me(Arms are my worst bodypart) is this split.
AM-Chest
PM-
Tris: Tricep pushdowns: 4 sets: 1 warm-up, 10reps, 8reps, 6 reps
Seated French press(Ez curl bar): 2 sets: 8 reps, 6 reps
Dips: 1 set: 10 reps
AM-Back
Bis: Close grip preacher curl:4 sets: 1 warm-up, 8reps, 6reps, 5 reps
Alternating dumbell curl: 2 sets: 6 reps, 6 reps
Overhead Cable Curl: 1 set: 10 reps
Forearms: Unrack the heaviest weight you can and old for as long as you can: 2-3 sets.