Circles, Faceted Faces

[spencyg]

I'm pretty new to 3D printing and have just started getting my feet wet with a new Duplicator 4S and Simplify3D. Since day 1 I have experienced issues with circles that look more like decagons, or some other polygon. I know all of these programs (and the firmware that they talk to) do not support actual circular moves. I come from a CNC world, so the mere fact that there aren't any G2 or G3 commands is...strange. Regardless of that, I would imagine that I should have control over how "fine" a circle is printed through the amount of linear segments I allow. Obviously this would drive code size, but printing a circle where I can clearly count the "flats" isn't acceptable. I've been through the documentation for Simplify3D as well as searched the forums (and the overall web) without finding any mention of this variable parameter. Could somebody enlighten me please??

Thanks

SG

[ole_blue_moon]

Hello,

Maybe your source stl file is too coarse, i.e. not enough triangles to in the mesh to make it look smooth. All stl objects are really just a combination of flat triangle planes, if there are enough of them the object will appear smooth, too few and you get the flat surfaces you describe. Open the stl file in a cad program and see if it looks too coarse.

[spencyg]

Bingo. I had the setting within the CAD program very coarse. Setting it much finer solved the faceted faces. Thanks!!!

SG

[CreativeDex]

Ive been having this problem off and on... at times re loading the gcode fixes the problem other times it doesnt change anything... its a bit frustrating but luckily they are usually fairly small facets but they are still noticeable

Polygon counts on files are much higher then they need to to create perfect circles but still the problem persist.