My layers are not solid

[Marm]

That looks like a good print to me. Are you wanting a perfectly flat finished surface when done? I've never been able to achieve that. If that's ABS, you can do an Acetone vapor bath and that will help smooth over the edges.

There might be a setting to change the bead width, make it smaller some and that might help the problem. If you're telling the slicer you have a .4 nozzle, tell it you have a .38 or so, and see what that does.

[DrBoost]

That looks like a good print to me. Are you wanting a perfectly flat finished surface when done? I've never been able to achieve that. If that's ABS, you can do an Acetone vapor bath and that will help smooth over the edges.

There might be a setting to change the bead width, make it smaller some and that might help the problem. If you're telling the slicer you have a .4 nozzle, tell it you have a .38 or so, and see what that does.

I think you're right, I'm still having slight under-extrusion issues. I don't want a perfectly flat top, well, yes I do but don't expect it haha. What you're seeing is the 2nd or 3rd layer on a 100% infill print. Seems to me that those lines should connect, essentially making one solid layer? I'll play around with the extrusion or nozzle size to see what happens.
Thanks for your reply.

[DrBoost]

That looks like a good print to me. Are you wanting a perfectly flat finished surface when done? I've never been able to achieve that. If that's ABS, you can do an Acetone vapor bath and that will help smooth over the edges.

There might be a setting to change the bead width, make it smaller some and that might help the problem. If you're telling the slicer you have a .4 nozzle, tell it you have a .38 or so, and see what that does.

I threw away the print so I can't take another picture of the bottom. The bottom is mostly solid, with some areas where the lines don't connect. I can't remember the thickness of the feeler gauge I use, but it's the same thickness as notebook paper.
I think I will fudge the nozzle diameter to .38 or .35 and see what happens.