Printing large parts with ABS causes a lot of failure due to warping, judging from discussions I've seen on forums and mailing lists. I saw this today about designing parts with some strategic holes to avoid warping:
Taking it a step further, it could perhaps be possible to create an infill type that has the same effect, that would work without redesigning the part, which could also create a seemingly solid piece and only doing what was necessary internally. By inserting some interruptions in the infill at strategic points horizontally, cooling stresses on large parts might be decreased, hopefully reducing warping.
I've not done any experiments (I mostly print with PLA myself), but the video and description on the above link give a good description of the problem and a "manual" fix - redesigning the part with some strategic holes.
Printing large parts with ABS causes a lot of failure due to warping, judging from discussions I've seen on forums and mailing lists. I saw this today about designing parts with some strategic holes to avoid warping:
http://hackaday.com/2011/11/15/a-technique-to-avoid-warping-on-large-3d-prints/
Taking it a step further, it could perhaps be possible to create an infill type that has the same effect, that would work without redesigning the part, which could also create a seemingly solid piece and only doing what was necessary internally. By inserting some interruptions in the infill at strategic points horizontally, cooling stresses on large parts might be decreased, hopefully reducing warping.
I've not done any experiments (I mostly print with PLA myself), but the video and description on the above link give a good description of the problem and a "manual" fix - redesigning the part with some strategic holes.