Customized version of https://www.thingiverse.com/thing:2627327

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=2627327

Using the following options:

textstring = R
fontname = Holtwood One SC
Parts = Everything
RoundedBase = 0
do_shift_font = automatic
textsize = 30
textheight = 10
wall = 1
baseheight_percent = .33
basethickness_percent = 0.1
shift_font_percent = 0.07
base_radius_add_percent = .1
bigger = .3
wiggle = .45
lidliplength = 2