6-1 chainmail has twice as many rings as "normal" 4-1 chainmail. Each ring is linked through 6 others.I have to admit that I have cheated. The rings arent true toroids, but are octagonal, which allows them to be slightly thicker.3 stl fies so far, labelled on the rings on each side. 4x4 has 16 rings 5x7 has 33 rings 13x19 has 242 rings. I haven't been patient enough to print this one yet.The 13x19 just fits on my 140x140mm bed.I printed with a raft, but it is a pain to remove.31/7/12 Added an octagonal single ring and an open ring. If you have ever made chainmail, you'll know it's all you need.