I would like to make a bee vac for swarms and was wondering if anybody knows how little vacuum pressure is needed.
I would like to use a cordless Hitachi 18 volt blower/vac or a 12 volt inflating device used to inflate ski tubes etc...
The 12 volt item is high volume/ low pressure.
I have heard some testing their bee vac on polystyrene balls from a bean bag.
Is this the best test. ( Without trying it on my own bees )