Failed print diagnosis, help!

[Callume]

Hi team,

Hoping someone can help me to learn and do better next time!

I have been tackling ABS over the last couple of weeks and finally got a good quality print on Friday afternoon.

With this confidence I started a print for a larger, more dense piece. It seems to have failed where the support (10% lines) connected with the model.

The image attached is flipped ie: the lines on the top of the image were actually the base of the print bed.

ABS
0.1 layer height
255 Nozzle
100 Bed
30 mm/s speed
100% infill
10% support (lines)
Ironing on (ZigZag)