Preview to Orienting Climbing Carabiners at Your Anchor: the Finer Points
Early in my climbing career, a mentor told me "...now we need you to start thinking about the 'working end' of your carabiners." He was talking about orienting my carabiners to maximize efficiency and safety. The full video takes two case studies, attaching our carabiners to our anchor points and attaching ourselves to the anchor, to go into some of the subtleties of carabiner orientation.
Follow this link to the full video and accompanying blog post.