8 votes
Accepted

How much stronger is a vertical v-thread than a horizontal one?

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 ...
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7 votes
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V-threads (Abalakov): How many holes are too many?

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, ...
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