Today’s invention is a technique for making a tubular frame structure.
Instead of welding, brazing, bolting or gluing…why not try knotting?
When making eg a bicycle frame, one tube would be filled with water under pressure.
The second tube would be similarly pressurised to maintain a mostly circular cross section and then bent, coarsely, into a knot shape around the first.
Both tubes would be subject to varying internal water pressure and tension applied to all four ends.
This would eventually allow a very tight knot to form so that both tubes would be pressed into each other, joining them tightly.
The tension and pressure would then be removed.
