Cassette door for Tascam 246 portastudio

I got hold of a Tascam 246 Portastudio and it was in pretty good shape except the cassette door was missing. While not critical to functionality it keeps dust out of the cassette well and it sort of looks broken without it.
I found a couple of pieces of the hinges rattling around inside the machine so I decided to try to copy the shape of these to make a new door.

The door consists of two 3D-printed hinge-parts and a sheet of 2mm plexiglass.
I used four M3 knurled insert nuts melted into t