"Dave Hinz" wrote in message
...
| On Fri, 21 Jan 2005 04:25:07 GMT, carl mciver
wrote:

| Seems to me that if you used a die you would likely get good
threads,
| but if you pulled or pushed on the stock while it was passing through
the
| die you would gain or lose a thread or more over the length of the
screw.
| Again, it's a tolerance stackup, but over a long item it adds up to be a
| whole bunch, especially on a lead screw.
|
| Great information. Question though, is that an SAE "whole bunch", or
| a metric "whole bunch"?

Neither. It's an "Oh, s**t!" whole bunch.