Dimensions are based loosely on some other caddies I found here and the Dell dust shield. Like many others, I had trouble printing some of the other caddies. This one should print without supports, has a nice little handle for easy insertion and removal, and just looks pretty clean, IMHO. If anyone wants to send me dimensions for a 3.5, I can probably update this to work on 3.5" models.
Dell_R610_2.5in_Caddy.stl | 73.1KB |