Need help with ABS splitting problem

[youngbnnn 0]

Hello, I'm trying to print ABS with my cr-10s and keep getting split problem.

 

I'm using Cura 3.6.0, nozzle temperature at 250C, bed temp at 100C with layer height 0.1mm

Extrusion speed is 20mm/s with 2 shells, 10% infill.

 

Regardless of the print size, splitting happened.

I think printing speed isn't that fast and the temperature is high enough.

I didn't check the fan power but I didn't change default setting value of it.

 

Please see attached images. 

https://photos.app.goo.gl/zz3fVsNpFcyMzBDd6

 

Any help would be appreciated!

[gr5 2,270]

You aren't getting good layer adhesion.  The lower layer is not melting enough when the new layer is going down on top.  The lower layer needs to melt a little so you get good adhesion.

 

You can't go much hotter on the nozzle so you have two options left:

1) Raise the air temperature by enclosing the printer.

2) Lower the fan speed a lot.  Try to go so low that the fan will still start back up if you stop it with your fingers but as low as possible.  Typically 1/3 power.

 

Ideally you want to do both of those above two things.  35C is a good air temperature.