First Print Results With BFB-3000 3D Printer

     The first models made on the BFB-3000 are shown at left.  The small duck model is a test file provided by Bits From Bytes to verify the correct set-up of the printer.  The locomotive wheel on the right is one of the drivers built to 1/2" per foot scale.  The prototype driver is 63" in diameter, the model is 2.625" not including the wheel flange.






    The flange on the locomotive wheel is badly distorted.  The reason is not clear but could be the heat of subsequent layers of molten plastic being applied along the tire rim near the flange.  The white plastic used for the built support is ABS while the wheel is PLA.
    In order to determine the better ways of building parts, some test parts will be designed and built to determine the best arrangement of layout and the appropriate sequence of plastics to use.
    Each sequence consists of a support "raft" and overhang support plastic and the primary build plastic.  Four combinations are possible.  All PLA, All ABS, ABS raft and PLA build (as was done for these first two models per vendors set-up procedures), and PLA raft and supports with ABS build.  Some designs having little or no overhangs can be built without supports.