To answer if you can use "plastic Screening" ; YES, it is safe for food.
I use it in sprouting tiny seeds, but always steam it after each use. I have used it in my dehydrator too, but so far only on lower temps. ( haven’t cut any fruit of vegies small enough yet to see weather a screen is warranted) ! Plastic screen comes in many sizes, and in some geographic areas, with different sized holes. I have wondered about using the metal screening, ( if I sprayed it with food quality silicon first, but have not tried it yet). The metal screen has MANY sizes of holes.
I am thinking of going to a hardware or lumber store, to see if they sell windows in the same size as my dehydrator shelves, ( a Good4you, square one) and then see if they sell a framed storm screen separately. If so, whalla, a small holed screen. I would still spray with silicon, lightly as a precaution.
I am new to dehydrating, so am learning as I go.
Slicing banana length-wise sound intriguing, I must try it.
I an reading these forums with much interest, thanks so much for the many ideas & tips
