There was a guy that printed the front axis for the 8" in ABS & had some problems with it cracking. Take a look at halber_mensch comments from Feb 4 & more recent here: http://www.thingiverse.com/thing:899247/#comments It is also my understanding that ABS will shrink a little, so I am not sure how well the holes line up with ABS on the 12" version. Someone more familiar with ABS maybe able to comment better on that. I would highly recommend trying PETG as it seems to be the best compromise between PLA & ABS. At $25 to $26 a kg, the price is pretty good. You can buy it on amazon, makerfarm or intservo. Here is a good description & links to the specs on it. http://www.intservo.com/products/esu...iant=963058195 I have over 1500 hours of printing on most of the parts I have replaced on my printer with PETG.