I used a 0.6 mm nozzle for printing, but 0.4 mm is also suitable. After printing, I used a bottle filled with hot water to replicate the shape of the bottle. For braiding, I used 6 mm elastic rope, but 4 mm is also perfect because the braid can be used double or tightened more strongly. In order to use less plastic, it is possible to reduce the height of Z in the slicer. To make the holder as strong as possible, use as much external line as possible. Check the sistem whether it is standard or laser cut.