I successfully built for myself a set of gymnastics rings using a 40 mm high tenacity nylon strap and a niteize "dual camjam" which is simply a cam buckle that does away with the need to sew one end of the strap to the buckle.
Since I'm a long time traveler, I came across a UHMWPE string used for kite-surf which is rated way above the nylon strap I'm currently using while being perhaps 1/5 the volume of the nylon strap. I successfully used the UHMWPE for my gymnastic rings in an experimental setup, so this is a very promising material for an ultra-compact portable workout system. Alas! It has been impossible to find a method to find a device to adjust the string loop length the way a ratched or the niteize "dual camjam" does, which renders my wonderfully thin and strong UHMWPE strings useless for the purpose I bought them.
Is there any device that does work as a ratchet/dual-camjam for thin strings? if so, what's the name of such a device?
Just as a note, there is a string tightener from niteize "camjam XT", but judging from most of reviews it seems to be close to useless.
