I needed a caddy to hold multiple hard drives for a home built case for a NAS. This will hold 3x 3.5 inch HDDs, they are spaced to allow for airflow as per Seagate's specs. They are designed for standard HDD screws such as these:
I printed using 30% infill in PLA for strength, I;m sure this can be lowered, no need for supports. Mirror for the other side.
The author marked this model as their own original creation.