Intro: Lightweight Portable Swing
A swing that weights under 5 kg and that can be hung on a branch of a tree, without using a ladder.
Step 1: Getting Started
You will need the following tools:
- Pencil and compass
- A Ø 95 mm hole saw
- A Ø 20 mm spade drill bit
- Sander ( with sanding paper: 60,120,240)
And this swing requires the following Materials:
- Waterproof wood glue
- Screws 4x30 A2 (10 screws)
- 18 mm plywood 122 x 62.5 cm
- 10 meter of Ø 10 mm synthetic rope
Step 2: Top and Bottom of Swing
- Draw with a compass two circles on the plywood. One with a diameter of 350 mm (the top) and the other one with a diameter of 300 mm (the bottom). Saw them both out with the jigsaw.
- You can use a router to take away the sharp edge and make it rounder. You can do it for the four sides of the 2 circles. When you want to do this, you have to use a round over bit for your router and use the built-in guide bearings that come with your router.
- In the center of both circles you drill a hole with the Ø 20 mm spade drill.
Step 3: Spacer
- Saw two small rounds out with the hole saw of Ø 95 mm. In the center of these rounds you drill a hole with the Ø 20 mm spade drill.
- Glue the two parts together making sure that the center holes are aligned.
- Drill two holes, and screw two screws into the holes for extra strength.
Step 4: Drilling and Sanding
- Drill eight holes, four in each circle. To make sure you don’t hurt yourself on the screws, you can use a countersink so that your screws don’t stick out.
- Before screwing everything together you sand all the surfaces with a sander. Use first the rough sandpaper to finish off with the soft sandpaper. do not forget to sand the edges and small spacer.
Step 5: Gluing Everything Together
- Attach the Ø 350 mm circle to the small spacer with diameter 95 mm. Use the wood glue to attach the spacer onto the circle. Then using a drill and screw bit, screw four screws into the spacer.
- Turn this piece around and do the same for the Ø 300 mm circle at the opposite side of the spacer. Make sure that the three center holes are aligned.
- Using a file, you can get rid of the bumps inside the center hole.
- Let the glue dry for 24 hours.
Step 6: Wood Stain
- To make sure your swing is weather resistant, you can use wood stain. Use a paint brush to apply the first coat of wood stain and let it dry for 16 hours.
- Apply a second coat and let it dry agian for 16 hours.
Step 7: Instructions Knot
In order to know how to tie the knot, you can put instructions on the back of the swing. The instructions for the knot I used, can be found in the attached file.