This was my initial setup which didn't work because a draft was created on the backside opening of the plastic bag. The cap was added in order to get the perfect ABS print.
The front view of the ABS print came out looking awesome and perfectly square!
Another side view to show you there is no warping!
Side view and no warping! Success!
Final part after support was removed.
Final part after support was removed.
Final part after support was removed.
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Perfect ABS prints - Ultimaker 2
This is the only way I could get ABS to print without warping, curling or pulling away from the heated bed on my Ultimaker 2. I used 1/2" thick insulation board and created a cap and insulated the inside walls as well as the front opening in order to allow the print to remain at a uniform temperature.