An adjustable pipe center; the lathe-center may be useful for supporting the end of a rotating workpiece having a hollow along an axis upon which the workpiece is rotating. The adjustable pipe center includes a shaft, a center-head having keyways, a plurality of bearing-fins, and a plurality of power-screws. The center-head is fixed to the shaft and is able to fit within the hollow of the workpiece. The plurality of bearing-fins is able to fit and slide within the keyways, with each having a bearing-surface for contacting the workpiece. The bearing-surface is disposed at an angle to the shaft-axis between zero and ninety degrees. The bearing-fins may be translated, functioning as an inclined plane to displace a workpiece resting against it. When the bearing-fins are collectively translated as desired, it may laterally adjust the position of the workpiece-axis relative to the shaft-axis.

A center for use on a tailstock of a lathe is disclosed. The center comprises an elongated shaft having a proximal end to be secured in a tailstock of a lathe, and a distal end that includes a conical tip for insertion into a center hole in a workpiece. The center also comprises a pivotable arm having a proximal arm end that is rotatably and slidingly secured to the elongated shaft. The pivotable arm has a distal arm end that is rotatable into a position atop the conical tip. The distal arm end has a distal side that includes a center drill, and a proximal side that includes a recess that is seatable onto the conical tip. The conical tip and the center drill have the same rotational centerpoint when the distal arm end is positioned over the conical tip and the conical tip is placed within the recess.

An adjustable pipe center; the lathe-center may be useful for supporting the end of a rotating workpiece having a hollow along an axis upon which the workpiece is rotating. The adjustable pipe center includes a shaft, a center-head having keyways, a plurality of bearing-fins, and a plurality of power-screws. The center-head is fixed to the shaft and is able to fit within the hollow of the workpiece. The plurality of bearing-fins is able to fit and slide within the keyways, with each having a bearing-surface for contacting the workpiece. The bearing-surface is disposed at an angle to the shaft-axis between zero and ninety degrees. The bearing-fins may be translated, functioning as an inclined plane to displace a workpiece resting against it. When the bearing-fins are collectively translated as desired, it may laterally adjust the position of the workpiece-axis relative to the shaft-axis.