As I had some old tires and don't want to throw them to the trash, I had the idea to reuse them as a cool box for garden parties.
2 old tires
45x45 cm OSB for bottom
5 M10x50 bolts with washers and nuts
2 tubes Polyurethane foam
1 old yoga mat, 10 mm
1 tube spray paint
65x65 cm marine plywood, 10 mm for top table
20 wood screws 3,5x40 mm
2 Flat straps 25x300 mm with 8 M5x30 bolts, washers and nuts
First, I used four 10 mm bolts to connect the two tires together.
For the bottom part, I had some scrap OSB parts. I draw a circle and cut them with a jig saw. Then I screwed both OSB semicircle parts together with a 3 x 3 cm wood. Aftes this, I used 4 cm wood screws to mount the OSB circle to the tire.
Painted the tires in a dark red and cut a 65 x 65 cm plywood plate as a top desk. I glued also a 1 cm thick mat under the plate as insulation.
The same mat was glued on the bottom. For the insulation of the side walls, I used Polyurethane foam, 2 tubes. After drying, the excess part of the foam was cut away.
I made also a mat lining to cover the foam.
The top plate was made of marine plywood to survive weather conditions. I fixed it with a 10 mm bolt, that it is to open to the side.
The top plate is varnished with a waterproof lacquer.
Add a hinge to prevent accidentally opening and carrying straps.
The final: Now I can put some cold beer with cold packs in it and enjoy a long time.