Hi Steve, the diameter for the strings should be somewhere near the following example (gut or nylgut on 1st will probably break very soon):
Hope that helps. Benjamin results for Lute (10 c.) a'=440Hz 63cm String Note Length Tension Gut Nylon Carbon KF Nylgut 1st g' 63 3,7 KG 0,382 0,427 0,325 0,334 0,402 2nd_a d' 63 3,4 KG 0,488 0,546 0,416 0,427 0,508 2nd_b d' 63 3,4 KG 0,488 0,546 0,416 0,427 0,508 3rd_a a 63 2,9 KG 0,602 0,673 0,513 0,527 0,622 3rd_b a 63 2,9 KG 0,602 0,673 0,513 0,527 0,622 4th_a f 63 2,9 KG 0,759 0,848 0,646 0,663 0,789 4th_b f 63 2,9 KG 0,759 0,848 0,646 0,663 0,789 5th_a c 63 2,9 KG 1,013 1,132 0,863 0,886 1,053 5th_b c 63 2,9 KG 1,013 1,132 0,863 0,886 1,053 6th_a g 63 2,7 KG 0,652 0,729 0,556 0,570 0,672 6th_b G 63 2,9 KG 1,352 1,511 1,152 1,182 1,392 7th_a f 63 2,7 KG 0,732 0,818 0,624 0,640 0,762 7th_b F 63 2,9 KG 1,517 1,696 1,293 1,327 1,567 8th_a e 63 2,7 KG 0,776 0,867 0,661 0,678 0,806 8th_b E 63 2,9 KG 1,608 1,797 1,370 1,406 1,658 9th_a d 63 2,7 KG 0,871 0,973 0,742 0,761 0,901 9th_b D 63 2,9 KG 1,804 2,017 1,537 1,578 1,854 10th_a c 63 2,7 KG 0,977 1,093 0,833 0,855 1,007 10th_b C 63 2,9 KG 2,025 2,265 1,726 1,771 2,075 To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
