Customized version of https://www.thingiverse.com/thing:2578935

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=2578935

Using the following options:

shape = round
outer_diameter = 40
strand_width = .4
strand_thickness = .4
gap_size = .8
rim_thickness = 1.7
rim_height = 3
offset_strands = yes
lift_strands = 0
$fn = 72