Abstract: The disclosure is directed to a pipe cylindrical thread cutting aid that has an inner cylindrical wall, which extends throughout its length; a pair of outer cylindrical walls between which lies a shoulder which is substantially perpendicular to these outer walls, which are substantially parallel to one another, and leading and trailing surfaces. The thread cutting aid of this invention allows near perfect alignment of the thread cutter with the work piece, permits starting and finishing thread cutting using one hand and permits the thread repair and cutting in close quarters ordinarily not reachable and attainable using prior art thread cutting tools. The thread cutting aid of this invention is particularly well suited for use in the shop where the pipe can be stabilized, e.g., in a vice or equivalent device, and to thread pipe softer than stainless steel or other equivalent steel pipe work piece which are resistant to cutting which occurs during threading, e.g., stainless steel pipe.