Why does my second layer cover more surface than my first layer when slicing?

[yofada]

I’m having issues where the first layer of my prints are having holes in them. It seems like the gaps aren’t getting filled. But when I check how the second layer prints in the slicer, it looks great…

How can I get better surface coverage/gap fill on the first layer??

Pic of first layer

Pic of second layer

Thanks in advance!!

[Olias]

Are you using Classic Wall generator or Arachne. Try changing the setting to the other. Arachne should give your nozzle more feed into nooks and crannies.

[EnoTheThracian]

In addition to @Olias comment, keep in mimd that 1st layer line width is usually slightly larger to give some squish. That is why they are different.

&

[yofada]

This may be the answer to why it looks like it does in the slicer. Thanks!! Now your answer is making me think that I may need to make my first layer lines slightly larger.

[MaxThreeD]

There’s also Quality → Precision → Elephant’s foot compensation setting which will shrink the outline of the first layer if enabled, changing the resulting line geometry. On a thin model it may not be needed at all, or could be reduced.

-M

[yofada]

This comment sparked a curiosity and I was able to find the solution. By making the initial layer width thinner, the lines in the slicer covered more of the surface touching the plate.

I can confirm that this worked as I am watching the first layer print as I type this resolution.