How lucky you are to have your grandmother's treadle machine. My BIL hauled grandma's treadle machine (the one I first learned to sew on) to the dump when he was helping to clean out her garage after she died. He thought it was just "junk". Needless to say, BIL was not on my favorites list. He was at the top of another list however. LOL. I was really upset with him. Years later, my hubby found a machine just like it and bought it for me for Valentines Day. That was the beginning of my antique sewing machine collection. I just love the old machines.