Hey all,
i built a 24" classic smart mirror.
My first try was not the best. i built it 3 month ago.
I use a plastic plate with a mirror foil, but the result was bad.
For my second try, i use a One-way mirror.
I bought the mirror on this german site:
https://www.glas-star.de/spionspiegelnachmass/chrome-spy-spiegel/
They sent the mirror in many european countries.
The deliver time was 1 week(in germany) and the quality is very good.
Now i am very happy with my smart mirror. :)