This print is a customizable clothes buttons designed with openscad.

You can customize:

• the size of the button (diameter, height);
• the shape of the button (number of faces);
• the holes (number of holes, size, position);
• the center recess (sizes, number of faces);
• the roundness of the edges.

Usage

1. Download OpenScad;
2. Open parametric_button_maker.scad;
3. Customize your button. (If the customizer is hidden, uncheck the last entry of the view menu "Hide Customizer");
4. When satisfied, render the model [F6];
5. Export the STL [F7] or print it [F8].

I print the button with 0.2mm layers without support. The buttons print time is from 5 minutes to 10 minutes. 

You can try  0.3mm layer height. It should works.