My problem with PE is each hand contains five thumbs when working with very small parts. I even invested in a PE bending tool but still have problems with small parts. Many years ago before PE and resin I would build parts out of plastic and wire. It would take days or even weeks to build something that can be done now in only hours using AM parts. One day I will master the art but for now I am trying to get my big fingers working together.
Ah, yes. The small parts. They can try your patience at times. No matter how hard I try, I still manage to glue the part to the tweezers rather than the model.
To bend the parts, I just use a pair of tweezers that have a wide, flat end. I start the bend by placing the tweezers just ahead of the fold line. I press it against a piece of glass to finish it. Those little PE folding devices can get pretty pricey ! (I try to consider myself frugal, not cheap.)