Chinese BVB25l lathe with tread cutting abilities. Taiwanese Allied Amco. There was no manual with the machine it also got lost or was misplaced.Use the manual feed handwheel to position the carriage to your desired starting point and set the scale on the handwheel to "0". 2. Move the carriage feed lever I was browsing the various 10x Yahoo sites and noted that the Samuel Machinery BVB25L and the Precision Matthews PM 1027 lathes look very similar to my Busy Small Mini Lathe Machine Manual Bench Metal Mini Lathe BVB25L SP2124-I ; Max. Length of Workpiece (mm):. 700 mm ; Spindle Bore(mm):. 21 m'm ; Machining Capacity:.