The file 'Hard Drive Caddy 2.5″ To 3.5″ Adapter Bracket 3D Printer Model' is (stl) file type, size is 3.8MB.
I tried some of the other caddy brackets on Thingiverse but they just didnt fit properly or have all the mounting holes, or they simply used too much plastic.
This is a simple bracket prints without support in about 1h15 with no support and 15% infill. It has the side mounting holes for the 2.5" drive and it has both the bottom and side threaded holes to fit in the 3.5" caddy, to the same specs as a Seagate hard drive. Uses about 10g of plastic.Works with a set of 4 or more M3 x5 standard PC panhead screws
Hard_Drive_Caddy_adapter_v3_20200315.stl | 7.8MB |