I made one and it served me well for a handful of batches. As with the above poster, I had to re-abuse the rollers regularly, and the consistency of the crush sucked. It was also very slow. I got a Barley Crusher and never looked back. On a large grain bill, I could sometimes spend an hour crushing grain.
My advice to a person looking to get into their own grain crushing is to save the money on a pasta roller to put toward a serious grain mill. If you brew frequently and your time is worth something to you, you'll recoup your expense a hundred times over.
"God forbid we should ever be twenty years without such a rebellion.... And what country can preserve its liberties, if its rulers are not warned from time to time, that this people preserve the spirit of resistance? Let them take arms.... The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants." - Thomas Jefferson, in letter to William S. Smith, 1787