I was going to try one of my wife's stainless steel Ricers that she uses for cooking to try and press or screen powder .
She puts boiled potatoes in the ricer either mashed up or cut up in chunks.
Then you squeeze the handle and the plunger pushes the potatoes down thru a screen or bottom plate with holes in it.
The stuff comes out like Rice or in extruded chunks.
Looks easier than trying to press damp powder thru a kitchen strainer.