Nut Milk (almond, cashew, soy, etc) - In House Made?

[1031creative]

We're wanting to switch to making all of our nut milks in house, as it's a huge growing trend, and when done right, a much better product at a much lower overall cost.
For those of you already doing it, what size batches are you making at a time, and what equipment? Seems the typical Vitamix/straining method could be a bit tedious and labor intensive for the quantities ultimately needed!
Thanks for any advice!