Abstract: The machine includes a base supportable on a horizontal surface and a framework mounted to the base and supporting thereon three rollers in fixed positions with the axes of the rollers extending parallel to each other and the projection thereof forming a right angle triangle in a plane normal to and traversing the axes. The hypotenuse of the right angle triangle faces downwardly, a first leg of the right angle triangle extends horizontally and a second leg of the right angle triangle extends vertically downwardly from the first leg such that the belt received on the machine has a fixed active upwardly facing horizontal flight extending along the first leg of the right angle triangle and a fixed active vertical flight extending along the second leg of the right angle triangle. A first backup platen is fixed to the framework and positioned beneath the horizontal active flight and a second backup platen is fixed to the framework behind the vertical active flight.