Summary

I have migrated to Printables because of the security and UX issues here at Thingiverse. You can find this model here:

https://www.printables.com/model/166852-drive-bay-adapter

Adapter for fitting a 3.5" device in a 5.25" bay. Useful for mounting your card reader, fan controller, floppy/zip/tape drive, USB header, etc.

Prints without support. All overhangs are 45° except for the screw holes.

Print Settings

Printer Brand:

Ultimaker

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p><a rel="nofollow" href="https://ultimaker.com/" target="_blank">Ultimaker Original</a></p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>Print slow and cool if you want a pretty result. Beware of lifting corners.</p></div>

Post-Printing

You can fit the 3.5" device to the adapter with one or two screws on each side, or two screws underneath.

To secure the adapter in the bay, use one self-tapping screw on each side. Regular optical drive bay screws will probably also work OK.

Custom Section

Update

            <div><p>Version 2. More rigid. Made the screw holes for the 5.25" mounting a little bit narrower.</p></div>

Drive bay adapter