Does anybody no what might have caused this?

[QGROVESBC 0]

Hey everyone!

 

I've been trying to solve my problem with retraction on my gMax 2 printer, but in doing so I've come across a new problem. Im not sure how to describe it except that it looks like holes on the top surfaces of my prints. Ill attach a picture of what I mean. Does anybody no what I should do in Cura to stop this from happening?

 

Thank you! 🙂

[gr5 2,094]

That's underextrusion.  Also see "pillowing".  Usually you fix it by having more layers in the top skin.  What is your layer height and what is your top thickness?

 

It could also be that your infill is too sparse or you are printing too fast (extruder can't quite keep up) but it visually looks like you just need 2 more layers to get it "normal".

[QGROVESBC 0]

Hey gr5! My layer height is set to 0.2 and my top thickness I just realized isn't set to anything. What should I try putting it at?

[geert_2 557]

I usually set top- and bottom thickness equal to wall thickness. For a 0.4mm nozzle, wall thickness often is 0.8mm or 1.2mm. So maybe try that first, and adjust if required? I have no idea what value it uses when you fill-in nothing.

[gr5 2,094]

I don't think it's possible to have nothing in top thickness.