Good grip

ORIGINAL: Red PittBull

ORIGINAL: kingkebabs

ORIGINAL: Red PittBull

Because, forearms are the muscle which give you grip.

Hammers help to..

This is incorrect.

Functional grip strength derives from working the fingers. Forearm hypertrophy is nothing but a biproduct of working the fingers since the connective muscle tissue runs from the fingers and up the entire arm.  You can't strengthen one end of the chain and expect the opposing end to miraculously follow suit. 

The actual muscle of the hand plays a huge of not an entire factor of effective grip.

If you want a strong grip you work the hands.

To the OP: A pair of CoC's is a training tool which you should consider.

And you don't work your fingers when you clench them around a heavy bar?

Don't get mad, I am actually being serious. I actually thought that was right...

Training to hold a 1 inch bar will allow you to grip a 1 inch bar more effectively.  i.e holding the fingers statically in a tight hooked position with minor to zero thumb recruitment - one of many less effective methods of working the hands.

With regards to hammer curls; as mentioned the actual stimulation of forearms does not give you finger / hand strength and the actual holding of the bar in the hammer curl doesn't offer anywhere near enough weight to be remotely effective or challenging to grip.

Working with a 1 inch girth bar and expecting overall grip to miraculously excel is the equivalent of expecting to develop an efficient set of abdominals by sitting upright between bench press sets.

ORIGINAL: David1991

ORIGINAL: vdk_au

What about one arm hangs. I've just started to do them again, I get around 30 seconds before I lose grip. I remembered the first time I tried, and I just fell off straight away.

holding urself up like the top of a chin up or just at the bottom?

at the bottom

THICKBAR!

train with a 2"bar until you can pull your max deadlift on it, I garentee you (or your money back j/k) you'll never ever have a problem holding any training weights on a bar ever again after working up to that, GARENTEED!!!