Need any trick to make more smooth at top round objects

[Boris]

Hello all.

First of all I understood the nature of the problem
I mean it's obvious why those "rings" are happened at upper parts of smooth round surfaces.
That's why I have no idea how to get rid of it.

Some way to fix is rotate the models before slicing.
Well, in most cases it cause supports to these round surfaces because they wont be upper side.
It's even worse

So, that's why I asking for a trick and wisdom

[Hugues]

Boris, this is already very good for FDM, i don't remember seeing much better than this. Which layer thickness are you using ? 100, or below maybe ?

I think if you want better than this you will have to start looking at DLP/resin printing.

[Boris]

it's 150. The figure is ~5cm tall.

So, the only thing I can do is try to print it 0.05 ?
whew )) I'll try

[fesch]

Yes, if you go down to 0.05, it will look better, but take a lot more time to print. Just try yourself ...

[seaton]

If you use simplify3D for your slicer you can set up different profiles to do what you want without printing the whole model in the higher resolution. i.e only print the top n layers at 0.05 and the rest at .100

[Boris]

Yes, I've read about that option in Simplify but in some models it's not top layer only.
So, I'll try this "trick" provided by Simplify3D anyway.

Thanks.

[seaton]

Yes, I've read about that option in Simplify but in some models it's not top layer only.
So, I'll try this "trick" provided by Simplify3D anyway.

Thanks.

I can see that it will happen at any horizontal curved area, and honestly I don't think theres much you can do as its how the slicer sees it and how it tries to emulate the curved surface with the filament.

maybe try printing in ABS and finish off in acetone vapour bath

[Boris]

Yes. Acetone bath is best post-processing for ABS. Just wanted to the best before it

[Tom Hardy]

In order to get smoother top surfaces, you can use the finishing methods such as sanding the top surface or using primers and paints etc. Besides, using 3D printers with high resolution is also a great method to get the smoother surface finish.