Print the chair frame and fabric separately in two separate colors.
You can then snap-fit the fabric onto the chair - Each of four corners of the fabric has a small dimple, which accepts a corresponding pin on the frame.
The chair frame has in built hinges, just remove it carefully after printing. There is sufficient clearance between the chair legs to prevent them from getting fused, but if they do you can gently pry them apart by hand.
The fabric also has in-built hinges, it will be little tight just after printing, but will become loose after you flex it.
The incline of chair is adjustable with 4 notches.
I have attached the Fusion 360 files, in case anyone wants to remix this.
Printer Brand:
FlashForge
Printer:
Rafts:
No
Supports:
No
Resolution:
0.2mm
Infill:
20%
Notes:
I used 3 solid outer layers to give it strength.