Abstract: A smokers' pipe reamer comprises a hollow body, a forward portion of which has three longitudinally extending radial grooves and bearing slots, each extending radially from a respective one of the grooves to the interior. In each of the grooves a reamer blade is guided, this blade having a U-shaped appendage protruding into the interior. Three pins held in the forward portion of the body extend through the openings of respective ones of the appendages to permit radial and swiveling motion of the respective reamer blades. Radial movement of the blades may be adjusted by a pin having a conical tip adapted to bear against the radially innermost portions of the blade appendages. The pin is adjustable along the longitudinal axis of the reamer body by means of screw threads and a guiding slot, thereby limiting radially inward movement of the appendages and the blades while permitting the blades to swivel about each of the three pins.