Reply To: Belt Type and Size needed for Graves MKIV machine? › Forums › Faceting Machines › Belt Type and Size needed for Graves MKIV machine? › Reply To: Belt Type and Size needed for Graves MKIV machine? August 16, 2017 at 12:52 pm #3424 markParticipant @Mark I just guesstimated the size and ordered a O-ring from Grainger !!