Customized version of https://www.thingiverse.com/thing:3785968

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=3785968

Using the following options:

holder_radius = 45
holder_thickness = 1.5
holder_height = 30
tube_bottom_thickness = 1
pen_count = 20
pen_radius = 4.5
pen_length = 150
rotx = 30
rotz = -40