When I first started printing with it, I was convinced that ABS really stood for something besides “Acrylonitrile butadiene styrene”. My mind three particular expletives were inserted in a certain order (A!B!S!) to describe my feelings about the material relative to printing it. Delamination, shrinkage, pulling tape off of the bed, clogs, you name it. Most of that kind of attitude, applied to any situation stems from frustration due to mis-understanding. In this case, material properties. Here is what I did with our dedicated ABS printer to try to alleviate two major issues, which are delamination between layers, and warpage.
I enclosed and insulated one of our machines. We had a real problem with larger prints cooling improperly, and destroying themselves by popping apart at the seams. With a few quick and dirty mods to the machine, we had a semi-enclosed build space that could keep our builds toasty to the finish. One was a removable polycarbonate panel for the front sealed with some weatherstripping. It hangs on the heads of some longer bolts that I replaced the original screws with. The rest was taken care of with a 3 dollar windshield sun visor and some spray adhesive to insulate the insides. The top is just the leftovers of the visor with a hole through it that slides around with the extruder. Though not pretty, those mods vastly improved the results of our ABS prints, and eliminated the delamination issue all together. (FF now sells the Creator X Pro, which comes with polycarbonate panels to enclose the build space.)
The interior of the build space sits at about 57 degrees C, solely from the heat of a 110 degree C build plate. That also means the components inside the space run hotter, which made me paranoid of at first, but everything seems O.K. so far….
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