I'm just as guilty of it as the next guy, but the comments about the fragility of this are kind of funny to me now. I had to destroy my dome as I received a replacement from SSC. . . which unfortunately was no better than the oringal. Once I understood how to get the life scanner up, it was more of a "feature" than a manufacturing error, I guess.
But anyways, as I gave it a solid effort, whacking the dome with a hammer, I was expecting it to shatter, but it didn't. R2's dome isn't a dome so much as it is sections, so ironically it's pretty structurally sound.
After a few minutes of hitting it with a hammer, I managed to scuff R2 up pretty good, and only managed to break off the center panel. There were a few other dents and cracks, but I was really expecting to bash it to smithereens with minimal effort, but alas it was not to be.