a great pattern!) so out came the scale. and I weighed the remaining yarn at the end of every row. the border lace is 19 rows plus the bind-off. after row 1, I had 61 grams left and row 2 used another 3 - I figured at that rate, I'd probably need another skein by row 14 or so. but somehow, a miracle occurred. and I had a very small ball (which sara said was actually pretty big and why was I so worried?) - 13 grams - left over.