My R2 unit is not completed yet and it will take several month to the finish line, but finally I reached a milestone: I printed the last piece of this project!
As this droid is equipped with an interface arm, I thought it could be nice to make it a "working" item, so I started designing a computer interface like the one seen on ep.IV inside the Death Star.
Unfortunately I found no measurements, so I had to guess them from the movie frames...