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Spong Knot

Spong KnotBob Thrun describes the Spong knot as a "monstrosity," noting that it jams at times, slips at others, is directional in its holding power, is hard to tie, and binds on itself. I don't like it either, but prefer to think of it as a lemon.


Note:
The performance of any ascending knot depends on the diameter, material, construction, and condition of both the main line and the ascender knot sling material. It may also depend on exactly how one ties the knot. Your knot’s performance can easily differ from mine.

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