Front panel was made simply from laser cut transparent arcylic plates (i still have pdf file with panels for cutting, in case you need). And i slightly matted those pannels by fine frid sand paper.
Knobs from differnet wood types and contact plates from brass was made on small benchtop lathe.
Wooden case i made to fit to acrylic pannels. I’ve use oak with walnut inserts at corners, more for style, than strenght.
Here area some photos from process of making the external parts of Lyra https://photos.app.goo.gl/hxw5EMXxfRe6LCc39