Simple 3" Floppy Disk Drive Caddy. Please note this is for the 3" drive widely used in early Amstrad built machines (CPC, PCW, Spectrum +3) not 3.5" drives.
I've replaced a few of my 3" drives with Goteks and wanted to use them with a Greasweazle USB interface to archive my disks (https://github.com/keirf/Greaseweazle). Instead of having the bare drive I designed this simple sleeve to help protect the drive and minimise dust etc...
4 screw holes in the side to secure, hole at the back for the connectors & inserts on the bottom for some rubber feet.
Could be used as an external drive with the right cables (and power).
*Originally from my Thingiverse listing and printed on my Anycubic i3 Mega, photos are from that print which I'll update if I print on my new Prusa MK3S+
The author hasn't provided the model origin yet.