Was out on an afternoon ride with SWMBO and we stopped at a little craft shop that specializes in handmade pewter items. While she was looking around I struck up a conversation with the owner and was able pick up a little over 3 pounds of pewter shavings from their lathe. They told me that the composition is 92% tin, 6% lead, 2% antimony, should be perfect to sweeten up my WW melt. Paid less than 1/2 what Rotometals gets for their tin.