There's a few ways to deal with twist. The first is to reverse the pattern once twist starts to build. That does mean that the pattern will change in your band, though. The second is to flip the cards over - turn them from z-twist to s-twist or vice versa - again, that can change the pattern depending on what pattern you are doing. I usually end up resorting to stopping and detangling the threads after a while. I have seen, however, and it's something I want to try, two other systems - one where the threads are attached to heavy weights and allowed to hang off the back of the loom, relying on the weights and gravity to keep them untwisted (not feasible in my setup, sadly), and one where the threads are attached to rings that can swivel feely (I think they're called fishing swivels). This is an option I really want to try. As for my loom, I'm lucky enough that my dad used to be an engineer and still loves making things, so he was kind enough to make me this loom about 10 years ago.

Thank you. I think I shall try the fish swivels. Lucky you to have a clever dad!! Inta Gifford. ♥️ 💐