ABS Prints Warping and Separating

[YellowGTM]

Good Day Everyone,

Searches are providing several hits, so please excuse if this has been answered previously.

As you'll see in the photos, the ABS material is shrinking rapidly. I'm aware that ABS needs
more heat.

Nozzle temp is 220 and Table temp is 100 degrees.
30% fill
All Standard Hardware
ABS 1.75 mm, 1 k.g. spool

What have you done to improve heating for ABS prints? I'm thinking to encase the entire
unit inside of an aluminum box to trap the heat.

abs2.jpgabs3.jpg

If you can provide a link, or give tips I'd appreciate it!