With hemming folder, left hand side fabirc trimmer and fabric chips suction pipe, suitable for hemming operation on tubular fabric, such as cuff or bottom of T-shirt,polo shirt. The tubular fabirc can be folded downward smoothly and the sewing operation continues while the folded fabric edge is trimmed by the left hand knife before it is sewn. In the meanwhile, fabric chips and dust can be sucked into the waste collection bag through the pipe.