Layers keep cracking? help

[hansen644]

Pic attached. Layers keep cracking and not sure how to fix it? 225 degrees ABS speed about 75% No cooling. bed at 107 degrees.
using a smartone 200 printer.

[JoeJ]

Try a lower layer height. It looks like your layers aren't really being squished together enough to bond.

[hansen644]

Using 2.0 layer height

[hansen644]

Sorry correction I thought it was 2.0 but look like I had it at 3.0 by misstake. will try it out now

[jimc]

also your temp for abs looks really low. im sure at that temp you have poor layer adhesion. run 245-255.

[tenaja]

also your temp for abs looks really low. im sure at that temp you have poor layer adhesion. run 245-255.

The actual temperature varies greatly between machines, but 225 seems pretty low to me, too.

[jimmybuckets]

I just printed my first role of abs and had very good luck. Printed at 250 with a bed temp of 105

[KC_703]

The cracking is from poor layer adhesion. Which is typically from low extrusion temp and too much cooling.

I agree with others 225 seems pretty low for ABS and 240-245C works best for me also... but it differs by brand and even color.

Cooling seems a bit high for ABS also. ABS seems to have a tendency to contract as it cools. I like to keep cooling between 30-50% and blipping to 80% for bridging.

Again, you'll have to experiment to find the sweet spot for your printer.

[jimmybuckets]

I don't use any cooling for abs