How to prevent layer separation, when printing tall vase-like (tube) objects? I am experiencing a minor layer separation when printing a body for a tipping-bucket rain gauge, which is basically a hollow tube with thin walls (3 mm). I am using Prusa I3 MK2 and a Fillamentum ABS white plastic. The model has been sliced in Siplify 3D with the following settings:


layer height: 0.2 mm
perimeter shells: 3 layers (almost entirely
fills up the wall)
extruder temperature: 230 °C
printing speed: default - 50 mm/s, outline - 35 mm/s, infill - 35 mm/s


Is it possible to prevent the irregular and layer separation by adjusting some of the settings, and not significantly increasing the printing time, which is already 13 hours?

PICTURES:
The best thing you can do for a large ABS print is to have an enclosure heated to 50C or better. For example, see this, this, this, and other search results.