I wanted a larger banneton, and my printer was too small. so I split it in half and scaled it up about 10%, then in the slicer subtracted two small cylinders in the base so I could use pieces of filament as alignment pins.

I've uploaded the .3mf file which is what I actually printed, since the slicer can't export the result of doing a subtraction.

warning: Long_Banneton½.stl does NOT have alignment slots

I printed two copies and a base and gorilla glued the 3 pieces together with a brick in the basket to weight it while the glue dried.

I ran out of filament printing this, that’s why there's a color change near the top of one side.

The bread in the photo uses 2¾ cups of flour (430g).