I wanted to make handle for my sprayer. However after printing i saw tat it leaks under pressure. All tutorials on youtube cover water leaking without pressure.
I use PLA nozzle 210ºC buildplate 60ºC layer height 0.2mm nozzle 0.4mm.
Though I’ve not tried this, I think a scarf seam joint might help by overlapping the filament at the seam position. Turn on the Advanced Process settings if you don’t see the option. Use contour and hole, Order of walls- inner/outer/inner, slow the outer wall speed. This should also make the seam nearly disappear and improve the appearance.