Thickness used, on Atlas machine:
Black #3, White #4, Lights #6 with cling wrap
Cutter Square Base Measurements:
M - 35 mm (1.38 in)
L - 45 mm (1.77 in)
XL - 55 mm (2.17 in)
Does not come in S size due to intricacy.
All measurements are taken of the bases' exterior dimensions, rounded off to the nearest decimal.