Did you ever thought about swinging with your friend? It's even possible to make it yourself. Just follow the steps and you can make your own duo-swing with a few bamboo-sticks.
Materials:
Bamboo ø35
Bamboo ø12
Rope for joining the bamboo: 65m
Rope for carrying 2 people of 75kg: f.i. Nylon ø 10mm
2 Carabiners
2 iron 8 chaped hooks
Tools:
Drilling machine
Saw
Knife
Multitool
Saw the length in 2 pieces of 65cm and 2 pieces of 30cm
Drill a hole of ø 20mm in the middle of the 2 pieces of 65 cm
Make a small notch everywhere you want to fix the small bamboo stick
Make sure the big bamboo stick is completely hollow
Cut 22 pieces of 38cm
Make a notch at 2 cm at the end of each stick with the multitool
Fasten the small bamboosticks at the big bamboo-stick
The notches prevent the bamboosticks to slide
Use the square knot and 3 times the clove hitch
Slide the big rope through the big bamboo sticks of 65cm
Extract the rope through the hole in the middle of the bamboo stick
Slide another rope through the bamboo stick of 30cm
Fix the 2 ropes and slide the other end of the rope oncemore through the 30cm bamboo stick
Knot very well the 2 ends at the 30cm bamboo stick
Form a triangel with the 2 ends of the rope through the 65cm bamboo stick as shown and knot them very well with a square knot
Make a double 8-knot
Use the iron 8-shaped hooks to adjust the length of the rope