mmm, I am curious what is tomato set and why do you think it was working...

Mine pollinate themselves, although I did shake the cages when they were smaller once in a while just for good measure. Doubt if it helped.

Why do you think you need to intervene? Just curious, maybe I am missing something.

I let the wind and random insects do most of the work since most of it happens before the blooms even open. I might rattle some cages now and then while in the garden or finger-flick a cluster of blossoms as I walk by but otherwise mine do just fine without brushing their teeth. :)

Dave

Tomatoes are self pollinating. The female part (stigma ?) is wrapped with the male parts that provide the pollens. Probably they don't even need winds since the pollens are right there surrounding the stigma. And probably there are thousands of them where just one is needed (like sperm in mammals). That is why crossing tomatoes is very difficult task.