If you want to play then print new blades; if you want to print then swap the fan - but pay attention to: Voltage, current draw, rpm, fan thickness, etc.
Note: most fans are built to be disposable/replaceable. They are never built to be repaired, and as yet, nobody has succeeded in replicating the efficiency/balance/effectiveness of commercially available blades via 3D printing - and many in the Drone world have tried and died!
If you decide to replace, ideally you want EXACTLY the same fan as a replacement - even if it costs more than something similar. When you get seasoned, you can upgrade and improve, but until then, similar is not good enough...