Thank you nicolinux! I created the file in rhino, and going back into that file, I realize not all the polysurfaces align at the bottom plane, small minor discrepancies but there nonetheless. Am fixing it now and have a hunch that it will fix the problem.
Although it looks like underextrusion, maybe there is an easier explanation. It might be that the second objects floats above the print area. Check out the layer preview and start from the bottom to the top.
Link to post
Share on other sites