Tag Info

TL;DR Vertical oriented V-threads (A-threads) are significantly stronger than horizontally aligned V-threads. The following numbers should not be taken at face value: Different test configurations were performed, but it is not clearly stated which are used to come up with these numbers. Tests by Beverly and Attaway showed an increase in mean failure load of ...

Will Gadd's book Ice & Mixed Climbing states that if you mess up the first attempt at a V-thread, start over in clean ice. This includes if your screw holes intersect only partway down the hole, the two holes didn't intersect, or the distance between the holes isn't large enough. Practicing making V-threads on the ground is much better than trying to ...