Mike Boswell
Contributor
Ive never heard of dipping the cam band in water before tightening itthough mine does have alot of rubber on it so it tends to grip pretty well and i always do it really tight. It probably explains why one of the guys i dive with who also never wets his cam band before tightening it has had his bottle slip out about 4 times since ive known him that i can think of off the top of my head
Christ the amount of times ive had to "hump" that damn bottle back up into the band.
Nylon absorbs a lot of water and gets soft and expands, and since most modern cam bands are made of nylon, most divers wet the bands before trying to tighten them.
This isn't always convenient where there is no ready source of water, and often the bands are tightened dry, so when the diver gets in the water the band expands, loosens up, and the tank falls out. This is not good.
I went to a scuba tent sale the other day and saw some new Scubapro travel-type BCDs, and they have the stainless steel tank latch instead of the POS cam band rocker handle. So at least Scubapro has caught on.