This is a frame for an IKEA GUNDE chair. This is really a great foldable chair, very lightweight and compact, which is important because hopefully one day we will be able to fly FPV RC models with Simchair. Also, it is available worldwide. Latest frame parts upgrade allows the use of IKEA MALINDA pillows for more comfort.
2m * 10x20mm aluminum pipe
1 * IKEA GUNDE chair
8 * M8x65 bolts, nuts, washers, spring washers
Print it, press fit parts onto the aluminum pipe and use some M8x65 bolts, nuts, washers and spring washers to fix it on the chair.