With the DB bar I have at home (1.2" / 3 cm), I can lift some 5-10% more.
Maybe it's the knurling, maybe the thickness, maybe the metal just vibrates on a frequence close to my body's... or whatever else.
Oh, and I weighed both the bar and the weights, the difference is at most 1% from what it says it weighs.
Today, I just managed 20 kg/44 lb x7 on hammer curls, pretty strict, while at the gym I can hardly get 6, the 6th hardly moving, and my wrist limping...
This happen to anyone else? (the DB/BB at home or at a gym feel so much better than those at another place)