My first single point thread.

[Susquatch]

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You would, of course, still need a thread relief for the threading tool to stop in.
The tool is mounted on a rigidly designed slide that is spring loaded heavily enough to overcome any force other than a rigid end stop. The cutting action typically wants to pull the tool toward the spindle or at the very least is neutral in cutting action. When the end of the thread is reached, the tool stops advancing. The length of the rigid slide, thread pitch and spindle rpm determine how long you have to reverse or disengage the threading handle.

Got it! Very nice!

Thank you!