Customized version of https://www.thingiverse.com/thing:953781

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=953781

Using the following options:

inside_dia = 50
outside_dia = 70
dome_h = 20
rim_support_thick = 0.1
inset = 30
num_gussets = 20
gusset_depth = 1
spiril_degrees = -10
resolution = 128