If you want the whole set, print the CufflinkCollection-DoctorWho.

Otherwise, choose the cuff-links you'd like, and print carefully. No raft is required, but if you can choose your speed, I recommend no faster than 15 speed to begin with.

TARDIS cuff-links
Print, trim and super-glue.

Dalek cuff-links
Print, trim, glue dalek base to dalek upper, and then to the cuff-link bar.

Circular Gallifreyan cuff-links
Print, trim and glue.
These use a fan-made form of Circular Gallifreyan writing and you can either have a go at decyphering them yourself, or you can look at the tags for this thing, where I reveal the meaning. (Warning, the photo is of a version where I made a typo - translate the model, not the photo.)
timeturners.wikidot.com/circular-gallifreyan

Blank cuff-links
Print, trim and glue, before attaching your chosen decoration.
These have a internal diameter of 2cm (0.78in). You can 2d-print a circular image of your choosing and glue it in.

---Finishing and Painting---
I've experimented a great deal with using acetone-dissolved ABS in a slurry to smoothe off these cufflinks, giving them a much sleeker surface than comes off my printer.

I first file them down with needle files and then apply thin layers of the slurry with a brush to smooth any particularly rough ridges.

Then they are spray primed, and finally painted with acrylic paints (the sort used for painting wargame/rpg miniatures.

(Secret bonus cuff-links in the Skp file - not Doctor Who related.)