Hello,
I’m new to world of 3d printing and hoping to get an advice of getting rid of the these strokes. I’m not sure what is causing them but anything that I need to do to get rid of them?
Thanks.
Hard to say. It looks as if this is present on the model itself. What does it look like in the slicer preview?
Remove this from the model. Or you can place a cuboid from above as a negative part and lower it onto the surface until the disturbing bumps have disappeared. You have the dimensions of the part, just create a new part if there is no other way.
The lines are the from the top surface pattern.
It can be changed in the slicer.
I would suggest calibrating your filament so that the top surface is as smooth as possible with whatever pattern you chose.
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Thanks. I will try different surface pattern to see if it’s going to fix those shiny parts on the pattern.
You could try a flow rate calibration to make the top layer smoother, if that is not enough, try to experiment with ironing the top layer.
See a potentially related topic here Force top surfaces to be fully covered - #13 by Olias
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Sorry for not seeing this. Since I don’t own an A1, I only saw this because someone linked to another post.
This is exactly the kind of issue that the “ironing” feature was designed to resolve. Ironing works by moving the hot nozzle back and forth in very fine, overlapping strokes, even finer than the nozzle width. Although it’s called ironing, it’s more like the way you’d use a garden rake to smooth out uneven soil or how a tractor grades a road for a level surface.
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I had a similar problem with my Elegoo Neptune 4 3D printer and discovered that I had to print the item as two stacked objects with a tiny vertical gap between the parts.
With a layer height at 0.2 mm I used a gap of 0.08mm so the printer did the first object and got a nice smooth surface then printed the second object immediately on top of the first
The numerals on the clock face would need to be raised proud of the surface cut off and saved as a separate file. Indentations for the numerals would be a problem.
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Thanks for the responses. I will try out ironing later to see if that works.
I found ironing more a bandaid than anything else. What the user is seeing is a real issue that should not happen regardless.
At least my prints so far (PETG) has been smooth without these artefacts.
I’m prints are with PETG, and I don’t care about moisture.
One man’s band aid is another man’s solution. 
Are you offering a suggestion?
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Hey Olias,
I would say start with calibration and check the temperature.
Since the pattern has something to do with the features (the circles and the raised stripes), I would start there.
It looks a bit like over/under extrusion, but that is hard to say.
What material is this?