I printed the original part from bonzai000 in 150% size, reworked it (cut bottom part into two halved horizontally for better printing. Supports are a real PITA. Hapy with the result? NO.
Further rework - I enlarged the tank and divided it in pieces (for illustration purposes and simpler understanding I just choose another color in the photographs):
Sizes of current model: total 80mm high, 206mm long (body), 115mm wide (body), 275mm long including cannon, cannon is 107mm long. Approximates.
My first print failed, I was quite upset, due to shitty filament. So I put this project aside. For later. The day will come!
Re-Designed in TinkerCad. Many thanks to origin author bonzai000. Good job!
The author remixed this model.
Divided into pieces.