New to the 3D printing scene and got myself an A250. However my prints all seems to have these issues where there are holes on my top layer on my prints even when using Luban in high quality, infill at 50% and 20 top layers.
Any help please?
I think you may be a.) extruding a bit hot and b.) under extruding
Try to fiddle with flow rate percentage a bit, and more importantly, when feeling brave, look into this extrude calibration is a must thread
Extruder Calibration a must - Snapmaker 2.0 - Snapmaker: where creation happens
The machine under extrudes quite a bit out of the box.
Consider looking into Cura for slicing, its more challenging but has much better control over things than Luban does.
It could also be this:
Gaps Between Infill and Outline (simplify3d.com)
This site here is a great reference for learning to fine tune things…
Print Quality Guide (simplify3d.com)
Try to practice printing a calibration cube, such as this:
XYZ 20mm Calibration Cube by iDig3Dprinting - Thingiverse
This allows you to see how things are going, while also giving you something measurable to figure out how dimensionally accurate you are currently printing.
Thanks for the input! Will take a look at the extrusion and cura for a start.