Customized version of https://www.thingiverse.com/thing:71370

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=71370

Using the following options:

PRINTBOT = 1
PRINTTOP = 1
PRINTPOS = 0
length = 174
width = 56
topHeight = 11.0
botHeight = 16.0
wall = 2
floor = 3.0
maLength = 5.5
maWidth = 5.5
maHeight = 5.5
maSpacer = 1.0
hiHeight = 0.0
hiDia = 3.5
CHAMFEREDGES = 1
CHAMFERLEN = 3.0
CYLPREC = 100