An employee was using a belt sanding machine to put a 45-degree angle on the end of a metal flat-bar (1"W x 24"L x 3/8"T). The flat bar was caught between the tool-rest and the belt, causing the opposite end of the flat bar that the employee was holding to spring back toward the machine. Their left hand struck the belt/machine guard resulting in amputation of 3/4 of their little finger. Their ring finger was also lacerated.