Steve told me that the steerer he will be installing for me (that was the starting point for this thread) will have threads that are rolled, not cut. He also said that he gets steerers from Tange and Reynolds, so presumably the threads on both are rolled or Steve incorrectly believes that they are rolled.

He's very busy at this time of year, so I hesitate to call him and give him the third degree. But it would be reasonable to call Reynolds and Tange and ask them directly. If I wasn't such a lazy sod I would do that myself.

Thanks to actual research by Gugie, we already know that Columbus threads are cut, not rolled. I would bet that if Columbus is cutting threads (rather than rolling them) that all other tubing manufacturers are, too. But we still have only one data point.