Parametric buckle
thingiverse
A parametric buckle for connecting and tensioning two flat lines. The knot shown in the picture slips in one direction only - if you apply tension to the inner of the two line ends. If the tension is equal or larger on the outer line, it is self-locking. Not safe for any purpose, but I tensioned mine (10mm bars, solid print) up to some 5kN. Parameters: Line width, bar diameter, overall length, tolerance Offset from center (working with thick lines requires more spacing in the center) Instructions Adjust scad file, print, buckle up. The STL provided is good for a 30mm line.
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