One day @Shuhuan told me what a Tesla valve is, it looks so special and has its own beautify. It’s possible to make one with WAZER cutting so I gave it a try.
The photo above shows the design idea: a 3mm thick base plate, a 5mm thick middle plate and a 3mm thick acrylic cover.
The small pieces for the internal structure are too small, almost impossible to connect them with screws. Instead, 1.6mm stainless pins are used. I noticed if you draw a 2mm hole in the drawing, WAM will basically pierce a hole there, so I use this as a feature for pin connection.
Tapped M3 threads on both sides to fill garnet abrasive.