The original model was created using Egil Kvaleberg parametric nozzle maker. Original deteriorated in the sun and was asked by a family member if I could make a replacement.

Sizes were optimized to 1.2mm wall thickness - so print with 3 parameters in your slicer using a 0.4 nozzle. Also adjusted to 120mm diameter for easier handling.

Finally, what was absent in Egil's design was the thread. Jamming it in maybe works, but I decided to insert thread for the most common 5L watering plastic watering cans. Recommend to observe the threads before you print to confirm yours look like this.

Get printing and growing!

Creality

Ender 3

No

No

0.2

100

Parameters:
Walls 3
Upper 3
Lower 3

0.4 nozzle @ 0.2 layer thickness

Material - Either PLA or PETG.