Interwoven 4 in 1 Tutorial

Interwoven 4 in 1 is best made with rings that have an AR(aspect ratio)of 4. Some example sizes are: 20awg 9/64 = .81-.9mm/3.6mm 18swg 3/16 = 1.2mm/4.8mm 16swg 1/4 = 1.59-1.6mm/6.4mm 14swg 5/16 = 2mm/7.9mm