I have arranged a certain configuration of cubes in 3D using the following code:
Graphics3D[
Table[
{Cuboid[{i, j - i + 1, j + 1}]},
{i, 1, 4, 1}, {j, 1, 4, 1}], Lighting -> {{"Ambient", White}},
Boxed -> False, ViewPoint -> {-1, -1, 1}]
Computing this as it is displays the following graphic:

This is fine, but the issue is what happens when you zoom in to this image in Mathematica. Doing so reveals extended edges in some of the corners shown here:

I would like to know why this is happening, and what I need to do to get rid of the extended edges. Is this perhaps happening because Mathematica is not completely updating the graphics upon zooming?
{Opacity[0.99], Table[{Cuboid[{i, j - i + 1, j + 1}]}, {i, 1, 4, 1}, {j, 1, 4, 1}]}is a workaround. – Stephen Luttrell Dec 5 '12 at 0:31Opacity[0.99]I still see the problem 8.0.4 on Win7x64. – s0rce Dec 5 '12 at 0:35Opacity[1]I see the problem on OS X, butOpacity[0.99]fixes it. – Stephen Luttrell Dec 5 '12 at 0:37Opacity[0.99]. – image_doctor Dec 5 '12 at 12:51