Top layer problem

[subsoniq]

Hi, i have a Rostock max V2 and i am using Repetier V1.03.

I have started using Cura engine with default printer settings and 10 % infill, and around 55mm/s speed setting. ¨
2mm layer height.
adhesion type: none
supporttype: none
PLA

All my top layers now seem to go a bit like this with holes in top and plastic not smoothing out.

Is this a infill problem?

[Khalid Khattak]

increase top layers..

[gestalt73]

It looks to me like an infill problem. Like many other types of issues, you need to watch the print to understand what's going on.

On most slicers, each layer should build up from the previous one, so if you're going from 10% to 100%, there should be a 10% layer, followed by 20%, 25%, 33% 50%, then the top layers.

It looks like it's not able to build enough of of a foundation from the previous infill layers to support your top surface.

if you're printing with 0.2mm layers, make sure your top/bottom layers are at least 3 layers deep.

Also check your infill speeds, and maybe your print temps.

Here's how I'd approach the part.
- It's a small part, so if I were printing it, I'd do 3 perimeters, surfaces at 0.6mm, 25% infill minimum unless there's some weight concern you have with the part.
- I'd also be printing at 20mm/s perimeter, then maybe 40mm/s tops for infill, loops and solid.

[ramai]

an alternative idea to the intelligent suggestions here, you might also try increasing the extrusion multiplier or decreasing the filament thickness from 1.75 to say 1.7

[Sonrisa3D]

More top layers or a more dense infill should solve this - don't be shy to do both!

[subsoniq]

Thank you for the replies. Looks like this was the case. Worked better with more infill and more top layers