Sven Yrvind · video

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Sven Yrvind load-tests homemade textile padeyes to destruction, incrementally adding 14-kilogram weights to a single padeye glued to a piece of plywood.▶ 0:01 The assembly holds through 13 increments — 182 kilos — before failing after a four-hour sustained load at approximately 184 kilos.▶ 4:29 The failure point is the plywood substrate, not the padeye itself or the adhesive bond.▶ 3:54 The padeye construction uses a piece of plywood, a strip of roofing material, epoxy, and two screws to hold parts in place during cure.▶ 4:01 The plywood contact area is roughly thumb-sized.▶ 5:29 A separate demonstration shows five identical padeyes holding a 5-kilogram water jug, implying a combined capacity approaching 500 kilos.▶ 1:50 The glass-fiber laminate used in the backing is a single 450-gram layer cut from a window offcut.▶ 5:14 Yrvind concludes the padeye design is sound and that a stronger substrate — either larger plywood or solid glass fiber — would shift the failure point away from the backing material.▶ 6:55

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