[Can't print small concentric cylinders]

Hi all,

So happy to be here with you guys. I can't manage to solve the issue presented in the pictures attached. It seems that in the parts surrounding screw holes with axis parallel to the Z one it makes some mess... Sometimes it neither extrudes, like in the case of the mosfet holder.

Those are my settings with a BQ Red PLA with a 0.4 mm Nozzle:

 

Layer Height: 0.2mm

Initial Layer Height: 0.3mm

Line Width: 0.45mm

Initial Layer Line Width: 120%

 

Wall line count: 3

Top layers: 3

Bottom Layers: 3

 

Infill Density: 70%

Infill Pattern: Grid

Gradual Infill Steps: 0

 

Printing Temperature: 210°C

Build Plate Temperature: 60°C

Diameter: 1.73mm

Flow: 72% (Calculated with thin wall test on a 20x20 Cube)

Enable Retraction: Yes

 

Print Speed: 45mm/s

Travel Speed: 70mm/s

 

Enable Print Cooling: Yes

 

Generate Support: Yes

Support Placement: Touching Build Plate

 

Build Plate Adhesion Type: Brim

Brim Line Count: 4

 

Print Sequence: All at once.

 

Any of you already had this problem? Did you managed to solve it?

What can I do?

 

Never had this problem using Slic3r, but I like using Cura because of its settings.

 

Thank you all guys.