Recent Blogs
Timber Hitch: Rope Arrangement and Illustrative Geometry
Explore the timber-hitch rope arrangement and illustrative wrap dimensions. The calculator does not predict grip, capacity or safe rigging.
Square or Reef Knot Mechanism: How It Works, Diagram, Parts, Uses and Strength Formula Explained
How the Square or Reef Knot works, why sailors use it for reefing sails, where it fails, and how to tie it correctly for binding...
Slip Knot Mechanism Explained: How It Works, Parts, Uses, and Quick-Release Diagram
Learn how a Slip Knot works, why riggers and arborists trust it for quick-release loads, and how to size it correctly with a worked example.
Fisherman’s Bend: Assumed Rope-Strength Comparison | FIRGELLI
Explore an anchor-bend rope attachment and compare assumed retention percentages and design factors. Outputs are arithmetic comparisons, not rated working loads.
Figure-Eight Knot: Forms and Assumed Strength Comparison | FIRGELLI
Compare assumed rope-strength retention and load arithmetic. Learn the distinction between figure-eight forms and why the outputs do not certify a rope system.
Clove Hitch Mechanism Explained: How It Works, Parts, Capstan Formula, Uses & Diagram
Trace the clove hitch’s two turns and crossing segment. Compare ideal capstan friction separately, with clear limits on knot strength and tail security.