Tired of fixing punctures on your cart? Here is a very simple, but durable 240x60mm airless wheel for a 16mm axle. Dimensions can easily be adjusted in Bambu Studio.

326g filament - 7.5 hours print - about 6.5€ per wheel.

You can print out a tread in TPU. I just re-used the tread from my old tires - slips on with a snug fit.