it can be done.......i had very bad biceps years ago....flat, long, small.
they looked like shit, especially because my triceps were pretty decent.
so it made my bis look even smaller, then add in my height 5'11.
arms sucked...
until i started training (like a bodybulider) not like a powerlifter..
i did so much volume, til i felt my bis were gonna pop....
and i did arms (as a session)....always bis first...
i trained bis 3 times a week....
once with tris, then again with back, then a small intense session
after legs...for years i did this....high volume, med, weight, lots
of super sets, drop sets, giant sets.....and ALL exercises....
dumbells, barbells, cables, all the machines, every angle..
i would do 20 sets for biceps.
very rarely doing anything really heavy.
ex..
4 sets of alternating dumbell curls
20s for 15
30s for 12
40s for 10
50s for as many as possible
4 sets of rope hammers on low pulley
i like to drop set these
100 for 10
70 for 10 to 12
50 for 15 to 20
4 complete sets, with 30 second rest between sets
4 sets barbell curls....
4 sets of 25 reps done quickly, with a 10 second rest between sets
i would normally just use the 45pound bar for these
if i did these first in the workout???...then you may be able to handle more.
4 or 5 sets of any machine, and reverse grip curls (free weight or cable)
(super set)
keeping the weight the same..
find a weight you can do a good 12 to 15 reps with good explosive form
on the machine....then jump right to the reverse grips witha weight
that you can do 10 to 15 reps.....
do this with absolutely NO rest at all, for 4 to 5 reps...
ehhh, but what do i know