When AutoCAD exports a DXF file the part is broken wherever a straight line meets another straight line, or a straight line meets an arc. In our CAD software, the objects need to be connected back together in order to make the objects whole.
It looks like you have CAD version 7 or newer based on your screen shots. When you bring it into Torchmate CAD, there is a import configuration screen that has some checkboxes on it, one says Close Shapes and the other says Remove Duplicates. If you check both of these boxes this should solve that problem.
Or if you already have the part brought in, you can select all of the part, and do an Arrange - Connect Path, which will find gaps smaller than a specified distance and connect them back together.
Mike @ Torchmate.com | www.Torchmate.com
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